Math CentralQuandaries & Queries


Question from May, a parent:

The difference between two numbers is 7. When the two numbers are multiplied the answer is 60. How do I work out the two numbers,I tried solving for one unknown and substitution and can not do it. Pleas show me how to do this.

Hi May,

If the smaller of the two numbers is $x$ then the larger must be $x + 7.$ The product of $x$ and $x + 7$ is 60. Solve for $x.$


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