in business , a and c invested amounts in the ratio 4 : 2 , whereas the ratio between amounts invested by a and b was 4 : 1 , if rs 20,000 was their profit , how much amount did a receive .
"explanation : a : b = 4 : 1 = 4 : 1 = > a : c = 4 : 2 = 4 : 2 = > a : b : c = 4 : 1 : 2 a share = ( 4 / 6 ) * 20000 = 13333 option a"
multiply(multiply(multiply(multiply(add(1, 4), 1), const_100), const_100), divide(1, add(add(2, 4), 1)))