ICSE Class 8 Answered

a given number is increased by 20% and the resulting number is again increased by 15%. What is the net percentage increase in the number?

Asked by kumaravadivel1999 | 16 Jul, 2019, 03:43: PM

Expert Answer

Let the number be x.

The given number is increased by 20%. Hence, resulting number is x + 20% of x = 120x/100

The resulting number is again increased by 15%. Hence, new number is 120x/100 + 15% of 120x/100 = 138x/100

Increased in the number = 138x/100 - x = 38x/100

Percentage increased = (38x/100)/x × 100 = 38%

Answered by Sneha shidid | 16 Jul, 2019, 04:08: PM

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