Please double check me
Brent washes 6 cars in 72minutes. How many minutes does it take Brent to wash one car
a. 6 min
b 12min
c 18 min
d 24 min
Answet: b
Approxiamtely 4 out of 10 Students at Marc's college live on campus. The college has 3,000 students. How many of them live on campus?
a. 600
b 1800
c 1500
d 1200
answer: d
The electricity costs of a business decreased from 11,000 one year to 10,000 the next. To the nearest whole percent, what was the rate of decrease?
a 7%
b 18%
c 9%
d 10%
answwer: b
8,000lb = tons
a 3
b 4
c 5
d 6
answer: b
Three of the four answers are correct. :-)
The third answer is wrong.
$11,000 / 1,000 = 0.091 = 9%
$1,000 / $11,000 = 0.091 = 9%
Ms. Sue
Are my other question correct?
Yes. Your other questions are correct.
Thank You
You're welcome. :-)
To find the answer to the first question, we need to divide the total time taken by the number of cars washed. Since Brent washes 6 cars in 72 minutes, we divide 72 by 6. This gives us 12 minutes per car. Therefore, the correct answer is b) 12 min.
For the second question, we know that 4 out of 10 students live on campus, and the college has a total of 3,000 students. To find how many students live on campus, we need to multiply 4/10 by 3,000. This gives us 1,200 students living on campus. Hence the correct answer is d) 1,200.
In the third question, we want to find the rate of decrease in the electricity costs. We need to calculate the percentage decrease from 11,000 to 10,000.
To do this, we subtract 10,000 from 11,000 to find the decrease, which is 1,000. Then, we divide the decrease by the original value, 11,000, and multiply by 100 to get the percentage.
So, (1,000/11,000) x 100 = 9.09%. When rounded to the nearest whole percent, the rate of decrease is approximately 9%. Therefore, the correct answer is c) 9%.
To convert 8,000 pounds to tons in the fourth question, we need to divide 8,000 by the conversion factor of pounds to tons. Since there are 2,000 pounds in a ton, we divide 8,000 by 2,000.
This gives us 4 tons. Hence, the correct answer is b) 4.