60 boys can complete a work in 40 days . how many men need to complete twice the work in 20 days
"one man can complete the work in 40 * 60 = 2400 days = one time work to complete the work twice it will be completed in let m be the no . of worker assign for this therefore the eqn becomes m * 20 = 2 * 2400 m = 240 workers answer : e"
divide(multiply(60, multiply(40, const_2)), 20)