Page 87 - New Medley 5 Semester 2

D. 1. Shreya spent `50 out of her pocket money of `300. Express her savings
in percentage.

2. Shridhi hanged 100 balloons on her birthday. 25 out of 100 balloons
were burst. What percentage of balloons were left?

3. Out of a class of 50 students, 45 students passed in Mathematics. What
is the percentage of students who passed in Mathematics?

4. 10 mL of milk is added to every 40 mL of water to make tea. What
percentage of milk is there in a cup of tea?

5. Out of 24 school days in a month, Prachi was absent for 7 days. What
was her percentage of attendance in the month?

Decimals and Percentages

We have learnt in the previous classes how to convert a fraction into a

percentage and vice versa. Likewise, we can also convert the decimals into
percentages using same process as we learnt for fractions.

Converting Decimals into Percentages

Example 3: Convert each of the following decimals into percentages.

(a) 0.6 (b) 0.28 (c) 1.7 (d) 0.125
6  6 

Solution: (a) 0.6 = =  × 100 % = 60%
10  10 

or 0.6 = (0.6 × 100)% = 60.0%, i.e., 60%

28
(b) 0.28 = = 28%
100

or 0.28 = (0.28 × 100)% = 28.00%, i.e., 28%

17  17 

(c) 1.7 = =  × 100 % = 170%
10  10 

or 1.7 = (1.7 × 100)% = 170.0%, i.e., 170%

125  125  125
.

(d) 0.125 = =  × 100 % = = 12 5%
1000  1000  10

or 0.125 = (0.125 × 100)% = 12.500%, i.e., 12.5%

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