SOLUTION: 3÷4 of a number is 15 what is 4÷5 of a number?

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: 3÷4 of a number is 15 what is 4÷5 of a number?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1099153: 3÷4 of a number is 15 what is 4÷5 of a number?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%283%2F4%29X=15
.
.
.
To get from 3%2F4 to 4%2F5 multiply by,
%283%2F4%29A=4%2F5
A=%284%2F3%29%284%2F5%29
A=16%2F15
So then multiply both sides of the equation by A,
%283%2F4%29AX=15A
%283%2F4%29%2816%2F15%29X=15%2816%2F15%29
%284%2F5%29X=16