Question
A is 3 years older than B while C is 4 years younger
than B. The ratio of age of A, 6 years hence and age of B, 4 years ago is 3:2. What was age of C, 10 years ago?Solution
Let the present age of B be x years. A’s present age = (x + 3) years C’s present age = (x - 4) years According to question, => [(x + 3) + 6]/(x -4) = 3/2 => x = 30 C’s age, 10 years ago = (30 - 4) – 10 = 16 years
Rs. 6,600 is invested in scheme βAβ offering simple interest of 13% p.a. and Rs. 2500 in scheme βBβ offering simple interest of 4% p.a. What is ...
- A sum of Rs. 7500 was invested at a certain annual compound interest rate and earned Rs. 1908 in interest over 2 years. What was the annual rate of interes...
If the simple interest for 6 years be equal to 60% of the principal. It will be equal to the principal after
A person invested some amount at the rate of 12% simple interest and a certain amount at the rate of 10% simple interest. He received yearly interest of...
A vessel contains 120 liters of a mixture of milk and water, with 75% of it being milk. If 30 liters of this mixture is replaced by 30 liters of water, ...
A certain sum of money becomes 2500 in 6 years and Rs. 3240 in 10 years at any certain rate of simple interest. Find the principal amount.
Calculate the total interest earned after 2 years on an investment of Rs. 2,500, with an annual compound interest rate of 20%, compounded annually.
Rs. 4000 when invested at 6% p.a. for (x + 4) years gives a simple interest of Rs. 4800. Find the amount received when the same sum is invested at 5% p....
If the ratio of the sum invested and simple interest received after 1 year is 25:6 respectively, then find the rate of interest.
Suresh placed Rs. 6,000 into an investment plan that accrues compound interest at an annual rate of 15%, compounded yearly. Calculate 80% of the compoun...