What is the answer to x?

Mathematics
Tutor: None Selected Time limit: 1 Day

May 25th, 2015

Since the two figures are similar, all the sides must be in ratio.  So, looking at sides AB and PQ, we get the ratio 3/5.4.  That has to be the same as BC and QR (5/x)

So,  3/5.4 = 5/x

Cross-multiply and you get 3x = 27;   x = 9

Hope that helps!

May 25th, 2015

thanks but how do you know which side to pick when doing this?

May 25th, 2015

thanks but how do you know which side to pick when doing this?

May 25th, 2015

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May 25th, 2015
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May 25th, 2015
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