Question
Pipe 'A' is 4 times as efficient as pipe 'B'. Pipe 'C',
which is one-fourth as efficient as pipe 'B', can fill a tank alone in 32 hours. Find difference between time taken by pipe 'C' to fill 50% of the tank and time taken (in minutes) by pipe 'A' to fill the tank completely.Solution
Let the efficiency of pipe 'C' be 'x' litres/hour.
So, total capacity of the tank = '32x' litres.
Efficiency of pipe 'A' = x × 4 × 4 = '16x' litres/hour
So, time taken by pipe 'A' to fill the tank = 32x / 16x = 2 hours
And, time taken by pipe 'C' to fill 50% of the tank = (32x × 0.5) / x = 16 hours
So, required difference = 16 - 2 = 14 hours = 14 × 60 = 840 minutes
Mr. X deposits ₹10,000 at a simple interest rate of 8% per annum for 4 years. After 2 years, he invests an additional ₹12,000 at the same rate for 3...
- Nisha placed Rs. 25,000 in plan 'P' and Rs. 40,000 in plan 'Q'. Plan 'P' earns 14% simple interest annually for 2 years, and plan 'Q' earns 9% per annum fo...
Anuj invested Rs. ‘x’ at simple interest of 15% p.a. and Anil invested Rs. (x + 500) at simple interest of 10% p.a. If at the end of 2nd year, sum o...
Find the ratio of simple interest and compound interest compounded annually received on a certain sum of at 20% rate of interest after two years respect...
The difference of simple interest from two banks on Rs. 8,000 in 3 years is Rs. 800. If the rate of interest per annum in two banks is R1 and R2, then w...
A man invested Rs. 'r' in scheme 'E' offering simple interest at 14% for 6 years and Rs. 3,000 in scheme 'F' offering simple interest at 10% for 3 years...
- A bank offers interest at the rate of 10% per annum, compounded half yearly. Find the interest received at the end of the year on a sum of Rs. 30000.
Determine the value of 'K' if an investment of Rs. 30,000, made under a simple interest scheme at an annual rate of 18%, yields an interest amount of Rs...
What will be the net CI on Rs. 5000 for 4 years at 30% p.a compounded annually?
Simple interest on a sum at 8% per annum for 3 years is Rs. 1920. What is the principal?
Relevant for Exams:
