SSAT数学测试题及解析

SSAT数学测试题及解析

1. If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number? A. ZY - V B. Z/V - 3 - Y C. Z/3 - V - Y D. 3V- Z - Y E. V- Z - Y

2. Two cyclists start biking from a trail's start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking? A. 2 hours

B. 4 hours and 30 minutes C. 5 hours ans 30 minutes D. 6 hours

E. 7 hours and 30 minutes

3. Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1.5 hours. How quickly can all three fill the pool together?

A. 12 minutes B. 15 minutes C. 21 minutes D. 23 minutes E. 28 minutes

4. The least common multiple of 8, 5, and 12 is: A. 100 B. 90 C, 135

D. 120 E. 125

5. What simple interest rate will Susan need to secure to make $2,500 in interest on a $10,000 principal over 5 years? A. 4% B. 5% C. 6% D. 7%

E. 8%

6. The town of Cedar Hill has 750 television sets. If there are 1.5 television sets for each person, what is the population of Cedar Hill? A. 1100 B. 1125 C. 500

D. 1000 E. 1200

7. A study reported that in a random sampling of 100 women over the age of 35 showed that 8 of the women were married 2 or more times. Based on the study results, how many women in a group of 5,000 women over the age of 35 would likely be married 2 or more times? A. 55 B. 150 C. 200 D. 400 E. 600

8. John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time? A. 25 mph B. 37 mph C. 41 mph D. 49 mph E. 56 mph

9. If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?

A. 2 minutes and 44 seconds B. 2 minutes and 58 seconds C. 3 minutes and 10 seconds D. 3 minutes and 26 seconds E. 4 minutes and 15 seconds

10. If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it? A. 0.8 days B. 1.09 days C. 1.23 days D. 1.65 days

E. 1.97 days

答案解析：

1. D 2. B

X*6=(x-3)*10 6X=10X-30 4X=30 X= 7.5 结果7.5- 3 3. B JIM 1/0.5=2 SUE 1/0.75=4/3 TONY 1/3/2= 2X+4/3X+2/3X=1 4X=1 X=0.25 H 4. D 5. B 6. C 750/1.5=500 7. D 8/100=x/5000 X=400 8. E 9. A

4x+2x+4/3x=20 22/3x=20 X=2.727 10. B

1/4x+1/6x+1/2x=1 X=12/11