Mona needs to photcopy an 11 cm wide 15 cm from a book for her report. She wants to enlage the picture so that its length will be 30cm. How wide will the enlage picture be?

Question

mathmate · Answer

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11/15=x/30
Use cross multiplication to find x.

mathstudent55 · Answer

You can set up a proportion, but just by looking at mathmate's drawing, look at how the length changes from the original to the copy. Make the width change the same way.

anonymous · Answer

My bad, thought that link had a proper answer.

anonymous · Answer

It would be 22

anonymous · Answer

By simply setting up a ratio

mathmate · Answer

Yep!

anonymous · Answer

Set up a proportion.$$\frac{30}{15}=\frac{x}{11} \implies x=22$$