in a 100 m race , a covers the distance in 30 seconds and b in 45 second . in this race a beats b by :
solution distance covered by b in 15 sec . = ( 100 / 45 x 15 ) m = 33.33 m . ∴ a beats b by 33.33 metres . answer a
multiply(divide(100, 45), subtract(45, 30))