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60% of what number is 21
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Jul 27, 2017
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60% of what number is 21
Mathematics
middle-school
Jobin James
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'of' in mathematics means multiplication
'is' in mathematics means equal
Translating 60% of what number is 21 into an equation, we get:
60% * x = 21
60%, or 60 percent, is 60 over 100 which is 60/100. This can be simplified to 3/5.
3/5 * x = 21
Multiply both sides by 5.
3/5 * 5 * x = 21 * 5
3x = 105
Divide 3 on both sides.
3x/3 = 105/3
x = 35
60% of
35
is 21.
Tuyen Luong
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Jul 28, 2017
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Tuyen Luong
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1
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60% of
35
is 21
Change the percentage (60) into a decimal by dividing it over 100:
Divide 21 by the decimal:
Eikonomega
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Jul 30, 2017
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Eikonomega
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