36 men can complete a piece of work in 18 days . in how days will 27 men can complete the work ?
"let the required number of days be x less men , more days ( indirect proportion ) 27 : 36 : : 18 : x 27 x = 36 * 18 x = ( 36 * 18 ) / 27 x = 24 days option is d"
divide(multiply(18, 36), 27)