Question

How much per cent increase, four times a
number in the number?​

Answer 1

Answer:

Let no. is a , 4times of a= 4a and let x % increase a, so x/100 ×a=4a, x= 4a×100/a=400 so 400%increase in that no.

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Answer 2

Answer:

Let no. is a , 4times of a= 4a and let x % increase a, so x/100 ×a=4a, x= 4a×100/a=400 so 400%increase in that no.

hope it will help you