Year 8 maths · D.5 · Percent, part and whole
Find the whole when given any percent
Find 1% first, then multiply by 100 to get the whole number.
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18 is 90% of what number?
Answer: 20
291 is 60% of what number?
Answer: 485
21 is 30% of what number?
Answer: 70
Tip: Find 1% first, then multiply by 100 to get the whole number.
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