a sum was put a simple interest at a certain rate for 1 years . had it been put at 6 % higher rate , it would have fetched rs . 30 more . the sum is :
"explanation : let the sub be rs . x and the initial rate be r % . then x ã — ( r + 6 ) ã — 1 / 100 â ˆ ’ x ã — r ã — 1 / 100 = 30 â ‡ ’ x ã — 6 ã — 1 / 100 = 30 â ‡ ’ x ã — 1 / 100 = 5 â ‡ ’ x = 500 answer : option a"
multiply(divide(divide(30, 1), 6), const_100)