To decrease or reduce a Quantity by subtracting Percentage % value (WP-30: Percentage %)

Decrease

700 kg by 18%

Solution: 

18% of 700 kg = `\frac {18}{100}`ｘ700 kg= 126 kg

thus

Decrease of 700 kg by 18% = 700 kg - 126 kg = 574 kg

Similar Question:

Increase
Rs. 1500 by 12%

Increase
1000 m by 50%

Decrease
120 by 40%

The salary of a factory worker is Rs. 5000. He was given an increment of 12%. Find his new salary.

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