Solve the proportion. Round the result to three significant digits when necessary. $\frac { 30 } { 35 } = \frac { y } { 42 }$
A) y = 36
B) y = 37
C) y = 0.028
D) y = 31
E) y = 39

Question

Quizplus · Accepted Answer

To solve the proportion $\frac{30}{35} = \frac{y}{42}$, cross-multiply to get $30 \times 42 = 35y$. Simplifying gives $1260 = 35y$, and dividing both sides by 35 gives $y = 36$.

Solve the Proportion 3035=y42\frac { 30 } { 35 } = \frac { y } { 42 }3530​=42y​

Solve the Proportion $\frac { 30 } { 35 } = \frac { y } { 42 }$