In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percentage who passed in both subjects?
A train with a length of 150m long, takes 30 seconds to cross a 500m long bridge. How much time will the take to cross a 370m long platform?
In a party 15 people shake their hands with each other. How many times did the handshakes take place?
At what profit percent must an article be sold so that by selling at half that price, there will be a loss of 30%?