CPM Homework Help : CC3 Problem 4-52

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4-52.

Solve each equation below for $x$ . Then check your solutions.

$\frac { x } { 8 } = \frac { 3 } { 4 }$
Hint (a):
Multiply both sides by $8$ .
$8 \cdot \frac{x}{8}=\frac{3}{4}\cdot 8$
$x=\frac{24}{4}$
Answer (a):
$x=6$

$\frac { 2 } { 5 } = \frac { x } { 40 }$
Hint (b):
Use the same method outlined in part (a).

$\frac { 1 } { 8 } = \frac { x } { 12 }$
Hint (c):
Use the same method as part (a). Multiply both sides by $12$ .
Answer (c):
$x=1.5$

$\frac { x } { 10 } = \frac { 12 } { 15 }$
Hint (d):
Use the methods shown in parts (a) and (c) to solve.

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