App Logo

No.1 PSC Learning App

1M+ Downloads
Speed of a boat is 5 km per hour in still water and the speed of the stream is 3 km per hour. If the boat takes 3 hours to go to a place and come back, the distance of the place is :
Speed of motorboat in still water is 45kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be
Two boats A and B start towards each other from two places, 108 km apart. Speed of the boat A and B in still water are 12km/hr and 15km/hr respectively. If A proceeds down and B up the stream, they will meet after.
A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is
A man rows to a place 35 km in distant and back in 10 hours 30 minutes. He found that he could row 5 km with the stream in the same time as he can row 4 km against the stream. Find the rate of flow of the stream.:

A man rows 750 m in 600 seconds against the stream and returns in 7127\frac{1}{2} minutes. Its rowing speed in still water is (in km/ hr).

A man swims downstream a distance of 15 km in 1 hour. If the speed of the current is 5 km/hour, the time taken by the man to swim the same distance upstream is
A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of bthe boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is
A man can row 6 km/h in still water. If the speed of the current is 2 km/h, it takes 3 hours more in upstream than in the downstream for the same distance. The distance is
The current of a stream runs at the rate of 4 km an hour. A boat goes 6 km and comes back to the starting point in 2 hours. The speed of the boat in still water is
If the sum and product of two numbers are respectively 40 and 375, then find the numbers
If the sum and product of two numbers are respectively 40 and 375, then their difference is
A boat goes 12 km downstream and comes back to the starting point in 3 hours. If the speed of the current is 3 km/hr, then the speed (in km/hr) of the boat in still water is
A boy can swim in still water at a speed of 10 km/hr. If the speed of the current would have been 5 kmph, then the boy could swim 60km
The sum of the reciprocals of Rehman’s ages, (in years) 3 years ago and 5 years from now is 1/3. Find his present age?
A man can row 30 km down stream and return in a total of 8 hours. If the speed of the boat in still water is four times the speed of the current, then the speed of the current is
In a fixed time, a boy swims double the distance along the current that he swims against the current. If the speed of the current is 3 km/hr, the speed of the boy in still water is
If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is :
Speed of a boat along and against the current are 14 kms/hr and 8 kms/hr respectively. The speed of the current is
A boat goes at 14 kmph along the stream and 8 kmph against the stream. The speed of the boat (in kmph) in still water is :

A boat covers 12 km upstream and 18 km downstream in 3 hours, while it covers 36 km up- stream and 24 km downstream in 612\frac{1}{2} hours. What is the speed of the current ?

A man rows a boat 18 kilometres in 4 hours down-stream and returns upstream in 12 hours. The speed of the stream (in km per hour) is :
The product of a number and 2 more than that is 168, what are the numbers?
9 added to the product of two consecutive multiples of 6 gives 729. What are the numbers?
Find two consecutive odd positive integers, sum of whose squares is 290?
The square of a term in the arithmetic sequence 2, 5, 8, ..., is 2500, What is its position
When each side of a square was reduced by 2 metres, the area became 49 square metres. What was the length of a side of the original square?

Is (x2)2+1=2x3(x-2)^2+1=2x-3 a quadratic equation, then find the roots

Find the nature of roots of the quadratic equation:

x2+16x+64=0x^2+16x+64=0

Examine the nature of the roots of the following quadratic equation:

3x2+8x+4=03x^2+8x+4=0

A boat goes 6 km an hour in still water, but takes thrice as much time in going the same distance against the current. The speed of the current (in km/hour) is :

Solve x2+5x+6x^2+5x+6

If b² - 4ac < 0 then the roots of the quadratic equation are _____
പരിശീലനം ലഭിച്ച ഒരാളുടെ കീഴിൽ നടത്തുന്ന ഒരു ചെറിയ സംഘ ചർച്ച അറിയപ്പെടുന്നത് ?
ഏറ്റവും ചെലവ് കുറവും സാമ്യം കുറവും എടുക്കുന്ന പ്രാഥമിക ഡാറ്റ ശേഖരണ രീതി
പരോക്ഷ വാമൊഴി അന്വേഷണം വഴി വിവരം നൽകുന്ന ആളെ _______ എന്ന് വിളിക്കുന്നു
നമുക്ക് ആവശ്യമുള്ള വിവരങ്ങൾ നല്കാൻ കഴിവുള്ള മൂന്നാമതൊരാളെ അന്വേഷകൻ സമീപിക്കുന്ന രീതി അറിയപ്പെടുന്നത്
ശേഖരിച്ച് വിലയിരുത്തപ്പെട്ട, പ്രസിദ്ധീകരിച്ചതോ അല്ലാത്തതോ ആയ ഏതൊരു വിവര സ്രോതസ്സും അറിയപ്പെടുന്നത്
ചോദ്യാവലിയിൽ ഉൾപെടുത്താൻ കഴിയുന്ന ചോദ്യങ്ങളുടെ എണ്ണം എത്ര ?
ഒരിക്കൽ ചോദ്യാവലി തയാറാക്കി കഴിഞ്ഞാൽ, ആ ചോദ്യാവലി ഉപയോഗിച്ച് ഒരു ചെറിയ ഗ്രൂപ്പിൽ ഒരു മുൻപരിശോധന നടത്തുന്നത് അഭികാമ്യമായിരിക്കും. ഇതിനെ വിളിക്കുന്ന പേര്
ഒരു പ്രത്യേക ആവശ്യത്തിനോ ആവശ്യങ്ങൾക്കോ ആയി ഡാറ്റ ശേഖരിക്കുന്നതിന് യുക്തിപരമായി ക്രമീകരിച്ചിട്ടുള്ള ചോദ്യങ്ങളുടെ ശ്രേണിയാണ്
Two boats, travelling at 5 and 10 kms per hour, head directly towards each other. They begin at a distance 20 kms from each other. How far apart are they (in kms) one minute before they collide?
A boy rows a boat against a stream flowing at 2 kmph for a distance of 9 km, and then turns round and rows back with the current. If the whole trip occupies 6 hours, find the boy’s rowing speed in still water.
A boat covers a distance of 30 km downstream in 2 hours while it take 6 hours to cover the same distance upstream. If the speed of the current is half of the speed of the boat then what is the speed of the boat in km per hour?
A boat has to travel upstream 20 km distance from point X of a river to point Y. The total time taken by boat in travelling from point X to Y and Y to X is 41 minutes 40 seconds. What is the speed of the boat?
Speed of a speed-boat when moving in the direction parallel to the direction of the current is 16 km/hr. Speed of the current is 3 km/hr. So the speed of the boat against the current will be (in km/hr)
A man can row 6 km/hr. in still water. It takes him twice as long to row up as to row down the river. Find the rate of stream
A boat covers 1200 km distance whose downstream speed is y kmph and the speed of the boat upstream is 60% of the speed of the boat downstream. If the difference between the time taken by the boat upstream and downstream is 32 hours. Find the distance covered by the boat in 5 hours if they traveled with the speed of still water.
The total time by the boat to cover 72 km upstream and 180 km downstream in 16 hours. The total time taken by the same boat to cover 108 km upstream and 126 downstream in 16 hours. If the sum of the upstream speed and downstream speed of the boat is 30 km, then find the speed of the stream.
The time taken by the boat can travel 240 km distance along the stream is equal to the time taken by the boat can travel 144 km distance against the stream. The speed of the boat is 20 km/hr. Find the speed of the stream.