Q1. The average age of 30 boys in a class is 15 years One boy aged 20 years left the class but two new boys came in his place whose ages differ by 5 years If the average age of all the boys now in the class becomes 15 years the age of the younger newcomer is

Q2. The average age of the boys in a class is 16 years and that of the girls is 15 years The average age for the whole class is

Q3. Dhoni scored 8000 runs in a certain number of innings In the next five innings he was out of form and hence could make only 85 runs as a result his average reduced by 1 run How many innings did he play in total

Q4. The average of 10 numbers is 7 What will be the new average if each of the numbers is multiplied by 8

Q5. A library has an average of 510 visitors on Sundays and 240 on other days The average number of visitors per day in a month of 30 days beginning with a Sunday is