Question

A certain sum yields 840 more simple interest if it is invested at 18% than at 12% for 2 years. Find the sum.

​

Answer 1

Answer:

$\huge{\fbox{\fbox{\bigstar{\mathfrak{\red{Answer}}}}}}$

Let the sum be Rs. S.

(S x 18 x 2)/100 - (S x 12 x 2)/100 = 840 => 36S/100 - 24S/100 = 840

=> 12S/100 = 840 => S = 7000