A box contains 6 black and 4 white balls. If a ball is taken from it, what is the probability of it being white?
A box contains 6 black and 4 white balls. If a ball is taken from it, what is the probability of it being black?
The simple interest on Rs. 6,000 in 4 years at R% interest per annum is equal to the simple interest on Rs.. 9,000 at the rate of 12% per annum in 2 years. What is the value of R?
A sum becomes Rs. 34400 in 6 years on simple interest at the rate of 12 percent per annum. What is the total interest for the 6 years?
A sum of Rs. 22,400 amounts to Rs. 24,250 in 6 years at the rate of simple interest. What is the rate of interest (correct to two decimal places)?
At what rate percent per annum of simple interest will a certain sum of money become double in 5 years?
X took a loan of Rs. 12500 with simple interest for as many years as the rate of interest. If the interest paid at the end of the period was Rs. 18000, then what was the rate of interest?
In how may years will a sum of Rs. 320 amount to Rs. 405 if interest is compounded at 12.5% per annum?
A sum borrowed under compound interest doubles itself in 10 years. When will it become fourfold of itself at the same rate of interest?
The price of a scooter which was bought for ₹84,000 depreciates at the rate of 10% p.a. Find its price after 2 years?
In how many years shall Rs. 3,500 invested at the rate of 10% simple interest per annum, amount to Rs. 4,500?
In how many years will the simple interest on a sum of money be equal to the principle at rate of % p.a ?
The compound interest on ₹40,000 at 6% per annum is ₹4,944. What is the period (in years) for which the amount is invested?
The compound interest on an amount for 2 years at 5% per annum compounded annually is ₹205. The simple interest is:
The compound interest on a sum of ₹15800 for 2 years at 9% per annum, when the interest is compound 8 monthly,is (nearest to a rupee):
The amount at compound interest on a sum for 5 years is ₹ 7800 and for 6 years is ₹ 9048 (interest is compounded annually). What is the rate of interest?
The compound interest on a certain sum at a certain rate percent per annum for the second year and the third year are ₹ 3300 and ₹ 3630, respectively. The sum is:
A sum of Rs. 4000 is lent on simple interest at the rate of 10% per annum. Simple interest for 5 years is how much more than the simple interest for 3 years?
A sum of Rs. 4500 is lent at compound interest. If the rate of interest is 10% per annum (interest is compounded annually), then what will be the amount after 3 years?
A sum becomes five times of itself in 8 years at simple interest. What is the rate of interest per annum?
A sum of Rs. 12500 gives interest of Rs. 5625 in T years at simple interest. If the rate of interest is 7.5%, then what will be the value of T?
A sum of Rs. 10640 gives interest of Rs. 3724 in x years at 5% simple interest. What will be the value of x?
A sum of Rs. 9800 gives simple interest of Rs. 4704 in 6 years. What will be the rate of interest per annum?
A boat goes at 16 kmph along the stream and kmph against the stream. The speed of the boat (in kmph) in still water is :10
On a river, Q is the mid-point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P ?
The speed of a boat along the stream is 12 km/h and against the stream is 8 km/h. The time taken by the boat to sail 24 km in still water is
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 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