Posted by Sam on Thursday, October 11, 2012 at 6:50am.
David has $5 in his wallet. This was 10% of the amount that he received from his mother. Find the total amount of money that David received from his mother.
35% of the number of books Ibrahim owns are fiction boos, find:
a.) the total number of books he owns.
b.) the number of nonfiction books he owns.
Please show me your complete workings. Thank you very much.

Maths Percentage (6th Grade)  Reiny, Thursday, October 11, 2012 at 8:00am
nonalgebraic way:
5% = $5
so 1% = 5/5 = $1
100% = 100(1) = $100
algebraic way:
.05x = 5
x = 5/.05 = 100
Do your second question in the same way. 
Maths Percentage (6th Grade)  MathLegends, Monday, January 2, 2017 at 8:09am
100 / 10 = 10
5 x 10 = 50
The answer is $50