20 men or 25 women can finish a work in 25 days . how many days 38 men and 15 women will take to finish this job ?
20 men = 25 women therefore , 1 women = 20 / 25 men = 4 / 5 men 15 women = 4 / 5 * 15 men = 12 men i . e . 38 men + 15 women = 38 men + 12 men = 50 men 1 work done by men = 20 * 25 20 * 25 = 50 * ? number of days = 20 * 25 / 50 = 10 days . b
divide(multiply(25, 25), add(multiply(divide(25, 20), 38), 15))