a work can be finished in 20 days by 10 women . the same work can be finished in fifteen days by 20 men . the ratio between the capacity of a man and a woman is
"work done by 10 women in 1 day = 1 / 20 work done by 1 woman in 1 day = 1 / ( 10 × 20 ) work done by 20 men in 1 day = 1 / 15 work done by 1 man in 1 day = 1 / ( 15 × 20 ) ratio of the capacity of a man and woman = 1 / ( 15 × 20 ) : 1 / ( 10 × 20 ) = 1 / 15 : 1 / 10 = 1 / 3 : 1 / 2 = 2 : 3 option c"
divide(divide(const_1, multiply(add(20, const_2), const_10)), divide(const_1, multiply(20, const_10)))