Question

if Rained 90 me this year,while it was 120 mm, last year. Hence there was _______% decrease in the rains.​

Answer 1

Step-by-step explanation:

Here total decrease = Rain in previous years - Rain in this year

= 120 - 90 mm = 30 mm.

Therefore, decrease percentage = Total decrease/Rain in previous year × 100.

=

$30 \div 120 \times 100 \\ = 100 \div 4 \\ = 25\%$

Therefore, decrease percentage = 25%.

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