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16. There are 99 participating cars and trucks in an expo.

There are 5 more cars than trucks.

How many cars are there?

- 50
- 51
- 52
- 53

52.

17. Which is the largest fraction?

3/5 5/8 6/11 8/14 10/18

- 3/5
- 5/8
- 6/11
- 8/14
- 10/18

5/8.

18. What is the average of all of the integers from 8 to 44?

22 24 26 28 30

26 ((44 + 8)/2).

19. A cube has a volume of 27㎥. What would the volume be, in ㎥, if the lengths of all sides were doubled?

32 36 216 432 514

216 (6*6*6).

20. The price of a dress was cut 50% for a sale. By what percentage should the price be increased so as the dress be sold again at the original price?

50% 60% 66.67% 75% 100%

100%. If for example the dress is $100, after the discount the price will become $50. The price will have to be increased by $50, or 100% of the discount price to return to the original price.