1. The average of seven numbers is 18. The average of first three numbers is 14 and the average of last three numbers is 19. What is the middle number? (3)
1) 42
2) 57
3) 27
4) Can’t be determined
5) None of these
2. The average temperature for Monday, Tuesday and Wednesday is 36.30 c .The average temperature for Tuesday, Wednesday and Thursday is 36.7 0 c . If Monday’s temperature recorded as 390 c , find Thursday’s temperature. (1)
1) 40.20 c
2) 39.20 c
3) 41.40 c
4) 40.40 c
5) None of these
3. 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 still remains 15 years, the age of the younger newcomer is (2)
1)20 years
2)15 years
3)10 years
4) 5 years
5) 12years
4. The average price of 12 different books is Rs 16 while the average price of 10 of these books is Rs 16.10. Of the remaining two books if the price of one is 50% more than the price of the other. What is the price of these two books? (3)
1) Rs.13, Rs.19.50
2) Rs.24, Rs.36.15
3)Rs.12.40, Rs.18.60
4) Rs.16.40, Rs.24.60
5) None of these
5. A cricketer’s average for 11 matches is 25 runs. In the next four matches he scored 72, 34, 51, 46 and 62 runs. Find his new average for the 15 matches. (3)
1) 39
2) 32
3) 36
4) 28
5) None of these