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
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.
The total amount collected by the class is $1800. This was calculated by determining that Mesut's $126 donation was 7% of the total collected. By dividing $126 by 0.07, we find the total amount.
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