At what profit percent must an article be sold so that by selling at half that price, there will be a loss of 30%?
A student walks from his house at a speed of 2 12 K per hour and reaches his school 6 minutes late. The next day he increases his speed by 1 km per hour and reaches 6 minutes before school time. How far is the school from his house?
A man swimming in a stream which flows 112km/hr finds that in a given time he can swim twice as far with the stream as he can against it. At what rate does he swim?
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 man buys an article for 10% less than its value and sells it for 10% more than its value. His gain or loss percentage is-