a can do a work in 12 days . b can do the same work in 24 days . if both a & b are working together in how many days they will finish the work ?
"a rate = 1 / 12 b rate = 1 / 24 ( a + b ) rate = ( 1 / 12 ) + ( 1 / 24 ) = 1 / 8 a & b finish the work in 8 days correct option is c"
divide(multiply(12, 24), add(12, 24))