Page 117 - ICSE Math 6

(d) Product of mean terms = Product of _________ terms

(e) If the cost of 4 eggs is ` 20, then the cost of 1 egg is ` _________.
2. Write True or False.

(a) 4 kg : 8 kg : : 13 m : 26 m (b) 5 kg : 20 kg : : 4 L : 17 L
(c) 15 hours : 20 hours : : ` 6 : ` 8 (d) 1 s : 2 s : : 11 s : 22 s

PRACTICE TIME

1. Write the given ratios in their simplest forms.

4 3 11
(a) 25 : 175 (b) 21 : 42 (c) 6: (d) :
7 5 4
2. Find the ratio between the following.

(a) 2 kg and 500 g (b) 4 h and 1 h 20 min
(c) 5 m and 250 cm (d) 80 paise and ` 2.80

3. Of the 40 students in a class, 12 are boys. Find the ratio of the number of boys to the number of
girls.
4. Rahul has three times as much marbles as Rohan has. Write the ratio of Rahul’s marbles to
Rohan’s marbles.
5. A ratio in its lowest terms is 5 : 7.
(a) Find its antecedent if its consequent is 21.

(b) Find its consequent if its antecedent is 20.
6. The ratio of Sanjay’s savings to Sarita’s savings is 3 : 7. If Sanjay saves ` 6,000, then how much
does Sarita save?

7. Hemant collected stamps in three consecutive months in the ratio 1 : 2 : 3. If he collected 300
stamps in all, find the number of stamps collected by him in each month.

8. Divide ` 400 between Sanjay and Monu in the ratio 1 : 3.
9. Divide 231 marbles between two children in the ratio 9 : 12.
10. Determine x.

(a) 3 : 7 : : x : 77 (b) 10 : 14 : : 25 : x
11. In a proportion, the first, third and the fourth terms are 6, 12 and 30 respectively. Find the second
term.

12. Find the fourth term of a proportion, if its first, second and third terms are 16, 24 and 24 respectively.
13. If 7 identical notebooks weigh 5.25 kg, what is the weight of 12 such notebooks?
14. A typist can type 12 pages in 240 minutes. How long will he take to type 35 pages?

15. A bike can cover 440 km using 8 litres of petrol. How many litres of petrol will it use to cover
550 km?

16. Mr Vinay earns ` 3,68,000 in 16 months. How much does he earn in 5 months?
17. Sameer buys 10 notebooks for ` 180 and Rahul buys 7 notebooks for ` 105. Who got the notebooks
cheaper?

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