ICSE BoardEnglish MediumSTD 7MATHSPercent and Percentage3 Marks
Question
What number: When decreased by 15% becomes 170?
✓
Answer
Let the number be $=100$ $ \text { Increase }=15 \%=15 $ $\therefore$ Decreased number $=100-15=85$ If decreased number is 85 , then original number $=100$ and if decreased number is 170 , then original number $=\frac{100}{85} \times 170=200$
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