a runs twice as fast as b and gives b a start of 64 m . how long should the racecourse be so that a and b might reach in the same time ?
"ratio of speeds of a and b is 2 : 1 b is 64 m away from a but we know that a covers 1 meter ( 2 - 1 ) more in every second than b the time taken for a to cover 64 m is 64 / 1 = 64 m so the total time taken by a and b to reach = 2 * 64 = 128 m answer : b"
multiply(64, const_2)