Page 103 - New Medley 5 Semester 2

Example 6: On a particular day, Shridhi saw the number of red
kites and yellow kites in the ratio 2 : 5. If the number
of yellow kites was 15, find the number of red kites in

the sky.
Solution: We have Red kites : yellow kites = 2 : 5

Also, the number of yellow kites = 15

So, Red kites : 15 = 2 : 5

i.e., Red kites × 5 = 15 × 2
15 × 2
\ Red kites = = 6
5

Thus, the number of red kites was 6.

Example 7: Aman and Anil together bought 66 oranges. They

distributed them in the ratio 5 : 6. Find the number of
oranges each one got.

Solution: The given ratio is 5 : 6. Sum of the terms = 5 + 6 = 11
5
Therefore, Aman got 5 out of 11, i.e., and Anil got 6
6 11
out of 11, i.e., .
11

5 5 6
Thus, of 66 oranges = × 66 = 30 oranges
11 11

6 6 6
and of 66 oranges = × 66 = 36 oranges
11 11

EXERCISE 2.2

A. State whether the following numbers form a proportion.

1. 5, 7, 9, 11 2. 2, 3, 4, 6 3. 10, 15, 20, 30

4. 8, 15, 20, 32 5. 12, 15, 40, 50 6. 6, 18, 21, 36

B. Express each set of numbers in a proportion.

1. 8, 4, 2, 1 2. 5, 3, 6, 10 3. 15, 45, 27, 9

4. 2, 8, 4, 16 5. 6, 9, 12, 8 6. 4, 10, 35, 14

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