Question
Average of 5 figures is 70. When two more figures are added
with an average of 'x', the new average increases by 10%. Find the value of 'x'.Solution
ATQ,
Sum of 5 figures = 5 × 70 = 350
New average of all the numbers = 70 × 1.1 = 77
So, sum of 7 numbers = 77 × 7 = 539
So, average of two new figures = (539 - 350) ÷ 2 = 94.5
- A man invested Rs. 12000 in bank A at 10% p.a. compound interest for three years. The interest received from the bank A is Rs. 1472 more than the interest ...
- If Rs. 80,000 is invested at 9% per annum simple interest for 6 years, how much amount will be received in the end?
If Rs. 12,500 is invested at simple interest for 2.5 years and the total amount becomes Rs. 15,625, what is the rate of interest per annum?
Anoop invested a sum at a simple interest rate of 8% per annum, and it grew to Rs.1,850 in 6 years. If the same sum is invested at a compound interest r...
A sum when invested at simple interest of 5% p.a. amounts to Rs. 18,000 after 4 years. If the same sum was invested at simple interest of 12% p.a. for ...
Simple interest and compound interest (compounded annually) earned on a sum at the end of 2 years at a certain rate of interest p.a. are Rs. 2560 and Rs...
Someone puts Rs. 18,000 in a scheme offering simple interest at ‘x%’ annually and receives Rs. 22,500 after 2.5 years. If he had instead invested Rs...
An amount of Rs. 2400 is placed in SIP 'P' at a 25% per annum simple interest rate for 8 years, and Rs. 2500 is invested in SIP 'Q' with a 20% annual co...
I: A sum of money is to be divided into two parts. One part is invested at 10% p.a. simple interest for 3 years, and the other part at 8% p.a. simple in...
At what % of simple interest per annum will Rs. 400 amount to Rs. 580 in five years?
