The average of x numbers is y<sup>2</sup> and the average of y numbers is x<sup>2</sup>. So, th…

Nine persons went to a hotel for taking their meals. Eight of them spent Rs.12 each on their meals and the ninth spent R…

A certain factory employed 600 men and 400 women and the average wage was Rs. 25.50 per day. If women got Rs. 5 less tha…

40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each wor…

Find the average of cubes of first 49 positive integers.

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the f…

The average of six numbers is 32. If each of first three numbers is increased by 2 and each of the remaining three numbe…

The average weight of 45 students in a class is 52 kg. Five of them whose average weight is 48 kg leave the class and ot…