Math

1. The towns population increased from 80,000 to 90,000 in ten years. What was the percent of increase? I didn't understand this one.
2. A \$15 item on sale for \$12 is marked down what percent? 20%
3. If Jenna buys and item for 40% off the regular price, will she pay more or less than half the price? Less than
4. If Jenna saves \$20 buying an item for 40% off the regular price, then what were the regular price and the sales price? Regular price is \$50 and sales price is \$30
This is what I got. Can someone please check this and if it's wrong please tell me my mistake and how to fix it. The answer will be helpful to make sure I get it right but please put in how to actually fix it. I really didn't understand this lesson

1. 👍 0
2. 👎 0
3. 👁 102
1. 1.
90,000 - 80,000 = 10,000
100(10,000 / 80,000) = 12.5% increase

2. Yes

3. No

4. Yes

1. 👍 0
2. 👎 0

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