Kailash loses 20% of his pocket money. After spending 25% of the remainder he has Rs 480 left. What was his pocket money? Answers:  A) Rs 600  B) Rs 800  C) Rs 900  D) Rs 1000  E) none of these
Let A be the pocket money,   A ( 1 + x/100) ( 1 + y/100) = 480 (Given)   Here x = - 20, y = - 25   Therefore,   A( 1 - 20/100) ( 1 - 25/100) = 480   A = (480 x 100 x 100) / (80 x 75) = Rs 800   ANSWER:Rs 800
<result>B</result>
Kailash loses 20% of his pocket money. After spending 25% of the remainder he has Rs 480 left. What was his pocket money?