18 men can complete a certain work in 15 days working 8 hours a day. How many men can complete the same work in 12 days working 9 hours a day?

Mr. A bought a laptop with \(16 {{2} \over 3}\) % discount on the labeled price. Had he bought it with 25% discount, he would have saved Rs 600. At what price did he buy the laptop?

A shopkeeper sold two articles. He sold one article at Rs.3175 and got 27% profit. He sold the other article at Rs.385 and got 23% loss. what is his overall gain or loss percent (correct to the nearest integer)?

Ram and Shyam can complete a task in \(6{ 2\over 3}\)days and 15 days, respectively. They work together for 4 days, and then Ram leaves. In how many days after Ram leaves, will Shyam complete the remaining task alone?