Question

problem solving and percentages

1 the price of a camera is \\$800. the discount is 20\\%. what is the discount?

2 out of 1200 students, 60\\% swim. how many swim?

3 out of 250 students 20\\% went to the camp. how many went to the camp?

4 annabel obtained 90 out of 120 marks. what percentage was this?

5 increase \\$100 by 20\\% and then decrease this result by 20\\%.

6 if 64\\% of students are present, what percentage is absent?

7 if 85\\% of a class went to a school play, what percentage did not go?

8 in a class of 30 students, 20\\% are absent. how many are present?

9 what is 15\\% of \\$1200?

10 out of 60 students \\(33\frac{1}{3}\\%\\) are sick. how many are not sick?

11 add 10\\% of \\$68 to 25\\% of \\$300.

12 42 out of 70 students play tennis. what percentage play tennis?

13 find 12\\% of 5 kg, giving the answer in grams.

14 what percentage is 80 of 896?

15 express 12 grams as a percentage of 216 grams.

Explanation:

Solve questions 1 to 5

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Solve questions 6 to 10

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Solve questions 11 to 15

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Answer:

No.	Answer
2	\(720\)
3	\(50\)
4	\(75\%\)
5	\(96\)
6	\(36\%\)
7	\(15\%\)
8	\(24\)
9	\(\$180\)
10	\(40\)
11	\(\$81.80\)
12	\(60\%\)
13	\(600\text{ g}\)
14	\(8.93\%\) (or \(8\frac{33}{56}\%\))
15	\(5.56\%\) (or \(5\frac{5}{9}\%\))