Jigyanshu Dixit
Last Activity: 2 Years ago
let the number of days be x. The ratio of number of days=12:x Number of days it takes is inversely proportional to the number of hours each man works per day and the number of men at work. ∴ 12 : x = 4 × 2 : 2 × 5 ∴12:x=4×2:2×5 ⇒ 12 x = 8 10 ⇒ x = 10 × 12 8 = 15 ⇒12x=810⇒x=10×128=15 days ∴ ∴ 4 men each working 2 hours per day can finish the job in 15 days
