Question

If a person does 120 jumping jacks in 10 minutes and another person does 140 jumping jacks in 14 minutes, which person has the greater jumping jacks rate?

1) The person who did 120 jumping jacks in 10 minutes
2) The person who did 140 jumping jacks in 14 minutes
3) Both have the same jumping jacks rate
4) Cannot be determined

Answer 1

The person who did 120 jumping jacks in 10 minutes has a higher rate of 12 jumping jacks per minute, compared to the person who did 140 jumping jacks in 14 minutes at a rate of 10 jumping jacks per minute.

Step-by-step explanation:

To determine who has the greater jumping jacks rate, we need to calculate the rate at which each person is performing the jumping jacks. We do this by dividing the number of jumping jacks by the time taken to perform them.

For the first person:
Rate = Number of jumping jacks / Time (in minutes) = 120 jumping jacks / 10 minutes = 12 jumping jacks per minute.

For the second person:
Rate = Number of jumping jacks / Time (in minutes) = 140 jumping jacks / 14 minutes = 10 jumping jacks per minute.

When we compare the two rates, the first person is performing 12 jumping jacks per minute, while the second person is performing 10 jumping jacks per minute. Therefore, the first person has the greater jumping jacks rate.

The correct answer is: 1) The person who did 120 jumping jacks in 10 minutes.