CAT 2018 Slot 2 QA Q28 Interest

Question 28 of the Quantitative Ability (QA) section, CAT 2018 Slot 2, with CAT's official answer.

Gopal borrows Rs. X from Ankit at 8% annual interest. He then adds Rs. Y of his own money and lends Rs. X+Y to Ishan at 10% annual interest. At the end of the year, after returning Ankit’s dues, the net interest retained by Gopal is the same as that accrued to Ankit. On the other hand, had Gopal lent Rs. X+2Y to Ishan at 10%, then the net interest retained by him would have increased by Rs. 150. If all interests are compounded annually, then find the value of X + Y. (TITA)

TITA: type in the answer. There are no options and no negative marking.

Answer: 4000 Interest TITA

A worked solution for this question is being written. Meanwhile, practise it in a timed mock and see how other aspirants did.