Directions (1-5): What value should come in the place of question mark (?) in the following questions?
Q6. In a physics class, the average age of all the members was 43.5 years. 10 members left the class and 6 new members joined. If the average age increased by 2 years and the total age decreased by 110, what was the number of members in the class initially?
Q7. There are 5 consecutive odd numbers. If the difference between the square of the average of first two odd numbers and the square of the average of last two odd numbers is 588, what is the smallest odd numbers?
Q8. The ratio of radius of a circle and length of a rectangular field is 2 : 7. If perimeter of circle and that of rectangular field be 176 m and 322 m respectively, what is the width of rectangular field?
(a) 85 m
(b) 63 m
(c) 58 m
(d) 77 m
(e) 39 m
Q9. What is the probability of selecting 2 black balls from a basket containing 5 black and 4 red balls?
Q10. A person sold a chair and a table each in an amount of Rs.15000. At table he got a profit of 20% and at chair he lost 25%. Find how much was his total profit or loss?
(a) Profit of Rs 3000
(b) Loss of Rs 3000
(c) Profit of Rs 2500
(d) Loss of Rs 2500
(e) None of these
Directions (11-15): In these questions, two equations numbered I and II are given. You have to solve both the equations and give answer
(a) x ≥ y
(b) x ≤ y
(c) x < y
(d) x > y
(e) x = y or Relationship between x and y cannot be established