#### Answer

$\frac{50}{63}$

#### Work Step by Step

2.5 to 3.15
the ratio is
$\frac{2.5}{3.15}$=$\frac{2.5\times100}{3.15\times100}$=$\frac{250}{315}$=$\frac{5\times50}{5\times63}$=$\frac{50}{63}$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$\frac{50}{63}$

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