a can run 128 metre in 28 seconds and b in 32 seconds . by what distance a beat b ?
clearly , a beats b by 4 seconds now find out how much b will run in these 4 seconds speed of b = distance / time taken by b = 128 / 32 = 4 m / s distance covered by b in 4 seconds = speed ã — time = 4 ã — 4 = 16 metre i . e . , a beat b by 16 metre answer is d
subtract(128, multiply(divide(128, 32), 28))