Tests

[mq] Percentage: Level 4 1. A library has 200 books, 30% of which are non-fiction. The library receives a donation of 300 new books. After the donation, 40% of the total collection is non-fiction. What percent of the **newly donated** books are non-fiction? 40% 43.3% 46.6% 50% 60% Check Solution (C): 1. Original: 200 books….

[mq] Percentage: Level 3 1. If \(x\) is \(0.5\%\) of \(y\), then \(y\) is what percent of \(x\)? 200% 2,000% 199% 19,900% 20,000% Check Solution (E): \(x = \frac{0.5}{100}y = 0.005y\). Solving for \(y\): \(y = \frac{x}{0.005} = \frac{1000x}{5} = 200x\). As a percentage: \(200 \times 100\% = 20,000\%\). 2. If Mary has half as…

[mq] Percentage: Level 2 1. If 150 is increased by 60% and then decreased by \(y\) percent, the result is 192. What is \(y\)? 10 15 20 25 30 Check Solution (C): 1. First increase: \( 150 \times 1.60 = 240 \). 2. The number becomes 240. Now it decreases to 192. 3. Decrease amount…

[mq] Percentage: Level 1 1. What is 0.5% of 200? 10 100 1 0.1 20 Check Solution (C): \( 0.5\% = \frac{0.5}{100} = 0.005 \). \( 0.005 \times 200 = 1 \). 2. If 30% of a number is 60, what is the number? 180 200 300 18 120 Check Solution (B): \( 0.30x =…