MATHEMATICS WORKSHEET 2 (PROBLEMS)

You have 5 minutes to solve these 10 items. Choose the letter of the correct answer. Good luck! The answers will be shown at the end of this post.

1. If 80% of a number A is 50% of B and B is 20% of C, then what is A n terms of C?

a. C/4 b. C/5 c. 3C d. C/8

2. There are 10 consecutive integers. If the sum of the first 5 integers is 265, then what is the sum of the 5 last integers?

a. 290 b. 275 c. 285 d. 280

3. Anna can do the typing job in 10 hours. After she has worked for 2 hours, Chester helps her and together they finish the job in 3 more hours. In how many hours could Chester have done the job by himself?

a. 6 b. 8 c. 5 d. 7

4. How many liters of water must be evaporated from 50 liters of a 3% salt solution so that the remaining solution will be 5% salt?

a. 19.6 b. 15 c. 12.5 d. 20

5. If a is equal to 1 more than the product of 3 and b, and b is equal to 1 less than the product of of 2 and c, then 2a is how much greater than 3b when c=4?

a. 2 b. 3 c. 4 d. 5

6.A group of students equally paid $600 for a broken laboratory instrument. If there have been 3 more students in the group, the cost of each share would have been $10 less. How many students were in the group?

a. 15 b. 12 c. 16 c. 18

7. A tank has two pipes. One pipe can fill the tank in 6 hours while the other pipe can empty the tank in 9 hours. If both pipes are open, in how many hours can the tank be filled?

a. 15 b. 12 c. 18 d. 16

8. If John can drive the distance of x km in 50 minutes, how many minutes (in terms of x) will it take him to drive 10 km at the same speed?

a. 500/x b. x/50 c. 50x d. 10x

9. Michael is one-third as old as Peter. Five years ago, Peter was four times as old as Michael. How old is Michael now?

a. 12 b. 14 c. 15 c. 16

10. Solve for this: [a- (b-c)] - [(a-b)-c]

a. -2b-2c b. 0 c. 2c c. -2b



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Answers:

1.d, 2.a, 3.a, 4.d, 5.d, 6.b, 7.c, 8.a, 9.c, 10.c

Solutions to these problems can be found here.