a can do a work in 3 days . b can do the same work in 6 days . if both a & b are working together in how many days they will finish the work ?
"a rate = 1 / 3 b rate = 1 / 6 ( a + b ) rate = ( 1 / 3 ) + ( 1 / 6 ) = 1 / 2 a & b finish the work in 2 days correct option is d"
divide(multiply(3, 6), add(3, 6))