Percent proportion word problems Practice Questions (Grade 7)

Question 1easy

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?

Tax $= 0.07 \times 250 = 17.50$ dollars.

Question 2easy

In a survey of $400$ people, $35\%$ said they prefer option A. How many people is that?

$0.35 \times 400 = 140$ people.

Question 3easy

A restaurant bill is $\text{\char36}72$ . What is a $15\%$ tip, in dollars?

Tip $= 0.15 \times 72 = 10.80$ dollars.

Question 4easy

A student answered $51$ out of $60$ questions correctly on a quiz. What percent of the questions did the student answer correctly?

$\dfrac{51}{60} = 0.85 = 85\%$ .

Question 5medium

$27$ is $45\%$ of a number. What is the number?

Let $n$ be the number. Then $0.45n = 27$ , so $n = 27 \div 0.45 = 60$ .

Question 6medium

A town's population increased from $12{,}000$ to $13{,}800$ . What is the percent increase?

Increase $= 13{,}800 - 12{,}000 = 1{,}800$ . Percent increase $= \dfrac{1{,}800}{12{,}000} = 0.15 = 15\%$ .

Question 7medium

After a $25\%$ discount, a board game costs $\text{\char36}45$ . What was the original price, in dollars, before the discount?

The sale price is $75\%$ of the original: $0.75p = 45$ , so $p = 45 \div 0.75 = 60$ dollars.

Question 8medium

The price of a laptop decreased from $\text{\char36}800$ to $\text{\char36}680$ . What is the percent decrease?

Decrease $= 800 - 680 = 120$ . Percent decrease $= \dfrac{120}{800} = 0.15 = 15\%$ .

Percent proportion word problems practice