Q20 of 32 Page 46

Rothinbabu deposits the money for each of his two daughters in such a way that when the ages of each of his daughters will be 18yrs. each one will get ₹1,20,000. The rate of simple interest per annum in the bank is 10% and the present ages of his daughters are 13yrs. and 8 yrs. respectively. Let us determine the money, he had deposited separately inthe bank for each of his daughters.

Let’s money deposited by Rothinbabu for his daughters are ‘p’ and ‘P’ respectively.


For a girl of 13 years:


P = p, r = 10, t = 5 and I = ?


Since,



⇒ Amount = p +


⇒120000 = p()



⇒ p = Rs. 80000


For a girl of 8 years:


P = P, r = 10, t = 10 and I = ?


Since,



⇒ Amount = p + p = 2p


⇒ 120000 = 2p


⇒ P =


Hence, money deposited by the main for his daughters are Rs. 80000 and Rs. 60000 respectively.


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