Ratios & Percent (Standard)

Multi-step exam-style items.

Phase 2 · SAT Math

Ratios & Percent: core idea

\% = \frac{part}{whole}\times 100

A $200$ dollar investment grows by $8\%$ . What is its value after one year?

Hint: Use multiplier 1.08. Answer: 216.

1. A recipe for $18$ muffins uses $2\frac14$ cups of milk. How many cups are needed for $30$ muffins?
2. In a survey, $42$ of $120$ students prefer art. If the school has $900$ students, about how many would be expected to prefer art?
3. A price including $6.5\%$ tax is $85.20$ dollars. What was the pre-tax price?
4. The ratio $a:b=4:7$ and $b:c=14:9$ . Find $a:c$ .
5. A population falls from $12,000$ to $10,200$ . What is the percent decrease?
6. A $48$ -ounce drink is $37.5\%$ concentrate. How many ounces are concentrate?
7. A car uses $14$ gallons for $392$ miles. At this rate, how far can $9$ gallons go?
8. After a $20\%$ discount, an item costs $56$ . What was the original price?
9. A test has $50$ questions. A student answered $44$ correctly. What percent were incorrect?