in a kilometer race , a beats b by 50 meters or 20 seconds . what time does a take to complete the race ?
"time taken by b run 1000 meters = ( 1000 * 20 ) / 50 = 400 sec . time taken by a = 400 - 20 = 380 sec . answer : a"
subtract(divide(multiply(const_1, const_1000), divide(50, 20)), 20)