Math

1. Which of the following is the greatest composite number that is less than 100?

A. 81

B. 89

C  91

D. 97

Answer: C

2. What are the prime factors of 420?

A. 2, 2, 3, 5

B. 2, 2, 5, 7

C. 2, 5, 6, 7

D. 2, 2, 3, 5, 7

3. The least common multiple or LCM of 4, 6 and 7 is _____.

A. 168

B. 84

C. 56

D  42

Answer: B

4. From the choices below, 68 and 102 is the greatest common factor or GCF of _____?

A. 4

B. 6

C. 12

D. 17

Answer: D

5. From the following choices, which among them are arranged in increasing order? 

A. 5/7, 4/6, 3/5, 2/4

B. 3/5, 4/7, 5/7, 6/1

C. 1/3, 1/5, 5/9, 7/1

D. 7/2, 6/3, 5/4, 4/5

Answer: C

6. Simplify: 10 2/3 - 7 3/5 - 2 1/4 - 3/5.

A. 1 7/12

B. 1 5/6

C. 13/60

D. 5/6

Answer: C

7. The hundredths digit of 98, 765.432 1 is _____.

A. 2

B. 3

C. 7

D. 8

Answer: B

8. What is 0.32 in fraction form?

A. 8/25

B. 9/16

C. 4/5

D. 3/4

Answer: A

9. 5 3/4 % in fraction form is

A. 23/10

B. 23/100

C. 23/4

D. 23/400

Answer: D

10. A solution contains 12% iodine. What fraction in lowest terms is the solution?

A. 1/12

B. 2/25

C. 6/50

D. 12/100

Answer: B

11. If 45% of x is 90, what is 50% of x?

A. 100

B. 102

C. 108

D. 112

Answer: A

12. What number decreased by 28% of itself gives 324?

A. 450

B. 420

C. 380

D. 360

Answer: A

13. The value of a cellular device depreciated 11, 760 pesos after 1 year. If the original price is 42 000 pesos, by how much in percent has the price decreased?

A. 24%

B. 28%

C. 32%

D. 36%

Answer: B

14. In a class election, Peter received 4 votes to every 3 votes that Joy received. How many votes did Joy receive if there were a total of 49 votes counted?

A. 7 votes

B. 14 votes

C. 21 votes

D. 28 votes

Answer: C

15. WHich property of real numbers best describes the equation 5x + 3 = 3 + 5x?

A. DIstributive

B. Commutative

C. Associative

D. Closure

Answer: B

16.  Sales agent gets 45% commission on his 100, 000 sales and 32.5% on his succeeding sales. How much commission will he get if his total sales is 450, 000?

A. 235, 500

B. 158, 750

C. 132, 450

D. 88, 550

Answer: B

17. It takes actor Martin 60 minutes to review a 25-page script? How long will take him to review a 40-page script?

A. 1 hour and 24 minutes

B. 1 hour and 32 minutes

C. 1 hour and 36 minutes

D. 1 hour and 48 minutes

Answer: C

18. If 8 men can do a job in 20 days, how long will it take 10 men to finish the same job?

A. 8 days

B. 10 days

C. 16 days

D. 24 days

Answer: C

19. The number of hours spent by Drew studying for his exams in Math, Science and English is in the ratio 3:4:1. If in total he spent 2 hours and 40 minutes, how many hours had he spent studying Math?

A. 40 minutes

B. 1 hour

C. 1 hour and 20 minutes

D. 1 hour and 30 minutes

Answer: B

20. Sonja is 3 years older than Sofia. In 6 years, Sonja will be 3 less than twice Sofia's present age. What is Sonja's present age?

A. 6

B. 12

C. 15

D. 18

Answer: C