Page 293 - ICSE Math 7

14. The weight of 8 notebooks is 4.560 kg, what is the weight of 12 such notebooks?
(a) 68.40 kg (b) 6.840 kg (c) 5.76 kg (d) 9.24 kg

y − x
15. If x is 25% less than y, then is equal to _____________.
y
3 2 1 1
(a) (b) (c) (d)
4 5 5 4
16. If 320 increases to 380 then the increase in percentage is __________.
(a) 18.75 (b) 15.25 (c) 15 (d) 16.75

17. What will be the profit per cent on selling a laptop for ` 45,360 which was bought for ` 42,000?
(a) 8% (b) 6% (c) 7% (d) 8.5%
18. If the marked price of a book is ` 465 and the selling price is ` 448, then there is a discount
of__________.
(a) ` 18 (b) ` 13 (c) ` 17 (d) ` 27
19. The rate of interest per annum at which ` 1,200 will amount to ` 1,500 in 2 years is ___________.

(a) 25% (b) 12.5% (c) 15% (d) 13.5%
20. The time period in which ` 2,000 will amount to ` 2,800 at the rate of 5% per annum is ________.
(a) 8 years (b) 5 years (c) 12 years (d) 10 years
–1
21. A cyclist travels at a speed of 18 km h . How much distance will he cover in 40 min?
(a) 160 km (b) 16 m (c) 120 m (d) 12 km
–1
22. The speed of a train is 120 km h . In how much time will the train cover 420 km?
(a) 210 min (b) 2.5 h (c) 2.4 h (d) 102 s
7 4
23. What is the degree of the polynomial a − 2 a b + 22 b + 3 3?
3 5
(a) 3 (b) 4 (c) 2 (d) 6

24. Which of the following algebraic expressions is a polynomial?
2
2
9x + 3 x + x x + 1 5x + 3 3x + 2 7
(a) (b) (c) (d)
x − 1 y + 7 x 9
25. Which of the following is a linear equation?
2
2
2
(a) 4x + 3 = 0 (b) 4x + 5y = 7 (c) 5x + 6 = 18 (d) 4x + 5y = 7
26. Which of the following is the solution of 6x – 9 = 15?
(a) 3 (b) 4 (c) 2 (d) 5
27. Which of the following is the resulting inequation, when each side of 5x > – 40 is divided by
10?
x x
(a) x < –4 (b) < –4 (c) > –4 (d) 2x > –4
2 2
28. Which of the following is a solution set of y + 4 ≤ 9, if the replacement set is {0, 1, 2, 3, 4, 5, 6}?
(a) {1, 2, 3, 4} (b) {0, 1, 2, 3} (c) {1, 2, 3, 4, 5} (d) {0, 1, 2, 3, 4, 5}
29. If the sum of the magnitudes of two adjacent angles is 180°, then they form a/an _________.

(a) alternate angle (b) complete angle (c) adjacent angle (d) linear pair

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