WVGSA Grade 7 Ratios and Proportional Relationships. Practice it free.

Five identical printing presses can complete a job in $12$ hours. Working at the same rate, how many hours would it take $8$ of these presses to complete the same job?

Solve for $n$: $\dfrac{2}{9} = \dfrac{n}{45}$.

A bubble solution uses soap concentrate and water in a ratio of $5$ to $40$. How many cups of soap concentrate should be added to $6$ gallons of water to make the solution in this ratio? ($4$ cups $=$ $1$ quart, $4$ quarts $=$ $1$ gallon.)

A $\text{\char36}60$ shirt is on sale for $15\%$ off. What is the sale price?

A customer buys a desk for $\text{\char36}250$ and pays $7\%$ sales tax on the purchase. How much is the sales tax, in dollars?

Find the simple interest on $\text{\char36}200$ at $10\%$ per year for $2$ years.

At a fitness challenge, each completed attempt scores the points shown. How many points were scored in all?
$\begin{array}{l|c|c|c} \text{Station} & \text{Attempts} & \text{Percent completed} & \text{Points each} \\ \hline \text{Jump} & 20 & 80\% & 1 \\ \text{Sprint} & 15 & 60\% & 2 \\ \text{Throw} & 25 & 40\% & 3 \end{array}$

On a map, $1.5$ inches represents an actual distance of $36$ miles. At this scale, what is the actual distance, in miles, represented by $4$ inches on the map?