For the following questions answer them individually
P alone can complete a work in 15 days and Q alone can complete the same work in 12 days. They start the work together but after 3 days P leaves the work. How much time will Q take to finish the remaining work?
Marks of 4 students are given in the table. All the marks are out of 100. Taking all the six subjects together, approximately how much percentage been scored by Ravina?
The length of two parallel sides of a trapezium are 15 metre and 20 metre. If its height is 22 metre, then what is the area of the trapezium?
In a much average runs scored by 4 batsmen is 48. If the runs scored by three batsmen are 58, 28 and 24 respectively, then how many runs did the fourth player score?
The average age of six brothers is 15 years. If their father is also included is also included, the average is increased by 7 years. Find the age of the father (in years).
Three metal rods of length 77 cm, 110 cm and 121 cm are to be cut into parts of equal length. Each part must be as long as possible. What is the maximum number of pieces that can be cut?
A man buys 21 mangoes for a rupee. How many mangoes had he sold for a rupee so that there is a loss of 30 percent?