SOLUTION: Please show and explain me the solution. How many is 1 1/2 od 500? 1 2/5 is 10% of what number?

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Question 963720: Please show and explain me the solution.
How many is 1 1/2 od 500?
1 2/5 is 10% of what number?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How many is 1 1/2 of 500?
convert one and a half to an improper fraction and multiply ("of usually means multiply)
3%2F2 * 500 = 1500%2F2 = 750
:
1 2/5 is 10% of what number?
let n = "the number"
7%2F5 = .10n
multiply both sides by 10 to obtain 1n
70%2F5 = 1n
divide 70 by 5
n = 14
:
:
check: 1.4 is 12%2F5;
.1n = 1.4
multiply both sides by 10
n = 14