Answered

As part of a class project. Mesut collected $126 in donations for a local hospice. That amount was 7% of the total amount collected by the class. How much money did the class collect in all?

Could you also explain how you achieved the answer. I'm having trouble solving these types of problems.

Thanks!



Answer :

elmina247
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.