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Sagot :
So you're given that 7% is $126, and you have to find 100%. In order to do this you could set up proportions.
1) 126/7=x/100
Next you can cross multiply and you'll get:
2) 12600=7x
Now divide each side by 7
3)12600/7=7x/7
And simplify
4)1800=x
Solution: $1800
1) 126/7=x/100
Next you can cross multiply and you'll get:
2) 12600=7x
Now divide each side by 7
3)12600/7=7x/7
And simplify
4)1800=x
Solution: $1800
As we had $126 is 7% of the whole class so 1% of the Whole class is 126/7=18, then 100% of the whole class is 18*100=$1800.
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