Two pipes can fill a tank in 30 hours and 40 hours, respectively. Find the time (in hours) taken to fill the tank when both the pipes are opened simultaneously.
A sum, when invested at 10% simple interest per annum, amounts to ₹3360 after 2 years. What is the simple interest (in ₹) on the same sum at the same rate of interest in 1 year?
In what ratio should sugar costing ₹78 per kg be mixed with sugar costing ₹36 per kg so that by selling the mixture at ₹86.8 per kg, there is a profit of 24%?
What is the greatest number which, when it divides 2987, 3755 and 4331, leaves a remainder of 11 in each case?
A person sold 20 dining tables for ₹5,39,000; thereby gaining the cost price of five dining tables. Find the cost price of each dining table
If the radius of the base of a right circular cylinder is decreased by 46% and its height is increased by 270%, then what is the percentage increase (closest integer) in its volume?
What is the difference in the amounts between two schemes of discount, the first one being a discount of 20%, and the second one, 2 successive discounts of 15% and 5%, both given on shopping of ₹5,050?
The radius of the base of a solid cone is 21 cm and its height is 9 cm. What is the volume of the cone?
A 280 m long train overtakes a man moving at a speed of 5 km/h (in same direction) in 42 seconds. How much time (in seconds) will it take this train to completely cross another 500 m long train, moving in the opposite direction at a speed of 43 km/h?
The average weight of 7 persons increases by 3 kg when a new person comes in place of one of them weighing 56 kg. What might be the weight of the new person?
The difference between a number increased by 17% and the same number decreased by 18% is 28. Find the number.
The sum of five numbers is 655. The average of the first two numbers is 77 and the third number is 134. Find the average of the remaining two numbers?
In a race, an athlete covers a distance of 300 m in 50 sec in the first lap. He covers the second lap of the same length in 150 sec. What is the average speed (in m/sec) of the athlete?
Two inlet pipes A and B can fill a cistern in 30 minutes and 36 minutes, respectively. Initially, only A is opened for 10 minutes. After 10 minutes, A is closed and B is opened. In how much time (in minutes) will the inlet pipe B fill the remaining part of the cistern?
An amount of ₹351 is divided among three persons in the ratio of 4 : 11 : 3. The difference between the largest and the smallest shares (in ₹) in the distribution is:
A bank gives 12% per annum interest on an account. If the interest is compounded halfyearly, then _______ of the principal would have been earned more in a year as interest on the account.
Find the compound interest on an amount of ₹24,000 after three years, when compounded annually at the rate of 15% per annum.
A sum, when invested at 10% simple interest per annum, amounts to ₹2400 after 2 years. What is the simple interest (in ₹) on the same sum at the same rate of interest in 2 years?
A bus travelling at 80 km/h completes a journey in 14 hours. At what speed will it have to cover the same distance in 20 hours?
In a class the average marks obtained in a science test by a group of 12 students is 70, by another group of 15 students is 85 and
that by another group of 18 students is 90. Find the average marks of all the students.
Prakash and Vinesh can complete a certain piece of work in 10 and 8 days, respectively, They started to work together, and after 3 days, Vinesh left. In how many days will Prakash complete the remaining work?
A shopkeeper marks up an item by 25% above its cost price. If the cost price of the item is ₹500, what is the marked price (in ₹)?
A person can complete a journey in 9 hours. He covers the first one-third part of the journey at the rate of 35 km/h and the remaining distance at the rate of 28 km/h. What is the total distance (in km) of his journey?
Vijay can do a piece of work in 4 hours. Ajay can do it in 28 hours. With the assistance of Amit, they completed the work in 3 hours. In how many hours can Amit alone do it?
Three partners invested in a business in the ratio 4:6:8. They invested their capitals for
8 months, 4 months and 5 months, respectively. What was the ratio of their profits?
അസ്മിത ₹4,800 ന് ഒരു സാരി വാങ്ങി, ഒരു വർഷത്തിനുശേഷം ₹4,200 ന് വിറ്റു. അവളുടെ നഷ്ട ശതമാനം കണ്ടെത്തുക.
A sum, when invested at 10% simple interest per annum, amounts to ₹3120 after 3
years. What is the simple interest (in ₹) on the same sum at the same rate of interest in
2 years?
A can do a piece of work in 12 days. B can do it in 18 days. With the assistance of C,
they completed the work in 4 days. C alone can do it in ______________days.
A conical canvas tent with height 14 units and radius 7 units requires__________________ square units of canvas to make.
A clay cylinder of height 42 cm is converted into a cone of the same radius as that of the cylinder. If the volume of the cylinder is 52,800 cm3 , then the radius (in cm) of the cone is:(Use π =22/7)
അഞ്ച് സംഖ്യകളുടെ ആകെത്തുക 655. ആദ്യത്തെ രണ്ട് സംഖ്യകളുടെ ശരാശരി 76 ഉം മൂന്നാമത്തെ സംഖ്യ 107 ഉം ആണ്. ശേഷിക്കുന്ന രണ്ട് സംഖ്യകളുടെ ശരാശരി എത്ര?
Kavya has to reach Bhopal which is 1011 km away in 19 hours. His starting speed for 7
hours was 25 km/hr. For the next 152 km his speed was 19km/hr. By what speed he
must travel now so as to reach Bhopal in decided time of 19hours?