Gaeasuper541idn
Answered

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A store has sold 90 notebooks, which is 20% of all the notebooks they had. How many notebooks did the store have at first?

Sagot :

Jers15idn
There are 90 notebooks, they represent 20% of the total notebooks they had.
So divide 90 by 20%

90/20%
90/.2
=450

Therefore they had a total number of 450 notebooks.

Hope this helps =)
Alvedeguzidn
Simply just divide 90 and 20%

Sample

90/20%

20% will be 20/100 or simply .2

90/(20/100)

Get the reciprocal of 20/100 and multiply it to 90

90 * 100/20

9000/20

Divide

450

Therefore the store had 450 notebooks in total first

I hope it helps