Volunteers put together 40 school-supply kits in 8 minutes. At this rate, how many could they put together in 30 minutes? Solve this problem using a unit rate. (1 point)

Question

Responses

9,600 school-supply kits
9,600 school-supply kits

150 school-supply kits
150 school-supply kits

6 school-supply kits
6 school-supply kits

10.67 school-supply kits

Answer 1

To solve this problem using a unit rate, we need to find the number of kits put together per minute.

In 8 minutes, they put together 40 kits.
So, in 1 minute, they put together 40/8 = 5 kits.

Therefore, in 30 minutes, they would put together 5 x 30 = 150 kits.

So the correct answer is:

150 school-supply kits.

Answer 2

Brian can read 80 pages in 2 hours. How many pages can he read in 3.5 hours? (1 point)
Responses

11.43 pages
11.43 pages

140 pages
140 pages

560 pages
560 pages

45.71 pages

Answer 3

To solve this problem, we need to find the number of pages Brian can read per hour.

In 2 hours, he can read 80 pages.
So, in 1 hour, he can read 80/2 = 40 pages.

Therefore, in 3.5 hours, he would read 40 x 3.5 = 140 pages.

So the correct answer is:

140 pages.

Answer 4

In 10 seconds, the surface of the earth at the equator has moved 4,600 meters. How far has the surface moved in 150 seconds?(1 point)
Responses

69,000 meters
69,000 meters

6,900,000 meters
6,900,000 meters

3.07 meters
3.07 meters

306.67 meters

Answer 5

To find how far the surface of the earth has moved in 150 seconds, we need to find the unit rate of movement.

In 10 seconds, the surface has moved 4,600 meters.
So, in 1 second, the surface moves 4600/10 = 460 meters.

Therefore, in 150 seconds, the surface of the earth would move 460 x 150 = 69,000 meters.

So the correct answer is:

69,000 meters.

Answer 6

Grace ran a 26-mile marathon in 4 hours. How far did Grace run in 1.5 hours?(1 point)
Responses

69.33 miles
69.33 miles

156 miles
156 miles

9.75 miles
9.75 miles

4.33 miles

Answer 7

To find how far Grace ran in 1.5 hours, we need to find the unit rate of distance.

In 4 hours, Grace ran 26 miles.
So, in 1 hour, Grace ran 26/4 = 6.5 miles.

Therefore, in 1.5 hours, Grace would run 6.5 x 1.5 = 9.75 miles.

So the correct answer is:

9.75 miles.

Answer 8

In 5 hours the Acela Express, the fastest train in North America, traveled 775 miles. How far did it travel in 8 hours?(1 point)
Responses

31,000 miles
31,000 miles

484.375 miles
484.375 miles

19.375 miles
19.375 miles

1,240 miles

Answer 9

To find how far the Acela Express traveled in 8 hours, we need to find the unit rate of distance.

In 5 hours, the Acela Express traveled 775 miles.
So, in 1 hour, the Acela Express traveled 775/5 = 155 miles.

Therefore, in 8 hours, the Acela Express would travel 155 x 8 = 1,240 miles.

So the correct answer is:

1,240 miles.