I need help with a math problem

label Mathematics
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Mary had 40 pencils that included blue and red.  The ratio is .15 to .35.  How many pencils did Mary have that are blue. This questions involves ratios.

Nov 6th, 2015

Thank you for the opportunity to help you with your question!

The ratio of blue pencils to red is .15 : .35

The whole set of pencils will be .15 + .35=0.5

To find the number of blue pencils, we solve the problem as indicated below:

=.15/.5 * 40=0.3 * 40=12 blue pencils.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Nov 6th, 2015

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Nov 6th, 2015
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