Question

Show all work including checking! Read the following word problem and then set the problem up as an equation so that you can solve it. You will need to write you answer as a complete sentence. The ratio of two numbers is 5 to 7. Their sum is 168. Find the two numbers.

Answer 1

Let n be the common factor of the two numbers. Then:
5n+7n=168
12n=168
n=14
The first number is 5*14, or 70
The second number is 7*14, or 98
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