36 men can complete a piece of work in 18 days . in how many days will 27 men complete the same work ?
"solution let the required number of days be x . then , less men , more days ∴ 27 : 36 : : 18 : x ⇔ 27 × x = 36 × 18 ⇔ x = 36 x 18 / 27 x = 24 . answer d"
divide(multiply(18, 36), 27)