Question

anil deposited or sum of rupees 500 in his bank on 5 august on 17 october he withdrew whatever interest had accured in his account at the same time he withdrew rupees hundred from his deposit he later withdrew the balance amount left in his account with interest on 29 December What sums did he receive on these two dates in the bank paid interest of 5% per annum

Answer 1

Let the number of Rs 5 notes be x
Hence the number of Rs 10 notes be (90 − x)
Total sum of money = Rs 500
∴ 5x + 10 (90 − x) = 500
5x + 900 − 10x = 500
 − 5x = 500 − 900 = −400
∴ x = 80
Hence there are 80 notes of Rs 5 and 10 notes of Rs 10.