Solve the proportion $\frac { x } { 5 } = \frac { 7 } { 20 }$ to determine x .
A) x= $\frac { 7 } { 100 }$
B) $x = 2$ 7
C) x= -$\frac { 7 } { 100 }$
D) x=21
E) x=$\frac { 7 } { 4 }$

Question

Quizplus · Accepted Answer

To solve a proportion, we cross-multiply, which means we multiply the numerator of one fraction by the denominator of the other fraction. So:
$$x\cdot 20=5\cdot 7$$
Simplifying:
$$20x=35$$
Dividing both sides by 20:
$$x=\frac{35}{20}=\frac{7}{4}$$
Therefore, the correct answer is E.

Solve the Proportion x5=720\frac { x } { 5 } = \frac { 7 } { 20 }5x​=207​

Solve the Proportion $\frac { x } { 5 } = \frac { 7 } { 20 }$