Question

if 400 is decreased by 20% find the no.​

Answer 1

20% of 400= 20/100 ×400

=4×20

=80

When 400 is decreased by 20% ...

400-80(20%)

=320

320 Is the required answer..

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Answer 2

Answer:

320

Step-by-step explanation:

20% of 400 = $\frac{20}{100}$ × 400

                    = 80

Since the question sates that 400 is decreased by 20%, we should subtract 20% of 400 from 400.

We have found out that 20% of 400 is 80.

Hence, the number will be = 400 - 80

                                             = 320