Percentage
Exercise 1 (Page 1, 2, & 3) - Example
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1. Convert fraction 3/20 to percent:
Method 1:
Write equivalent fraction to 3/20 with denominator 100. The equivalent fraction is percent.
3/20 = 15/100 = 15%
Method 2:
Write 144/200 in percentage
144/200 of 100 = (144 x 100)/200 = 72%
Write 7/9 in percentage
7/9 of 100 = (7 x 100)/9 = 77
7/9
%
2. Convert 17
1/2%
to fraction:
17
1/2%
= 35/2 x 1/100 = 35/200 = 7/40
3. Find 12
1/2%
of 40:
12
1/2%
= 25/2 x 1/100 = 25/200 = 1/8
1/8 of 40 = 1/8 x 40 = 5
4. Find value of X in: 6
1/4%
of X = 100
6
1/4%
= 25/4 x 1/100 = 25/400 = 1/16
1/16 of X = 100
X = 100 x 16/1
X = 1600
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