Question

Ilene counted how many times she jumped rope without stopping.

She counted 144 jumps in 90 seconds.
What was her average jump rate? Find the unit rate.

0.625 jumps/second

54 jumps/second

1.6 jumps/second

234 jumps/second

Answer 1

1.6 jumps/seconds.

Step-by-step explanation:

Given the following data;

Total number of jumps = 144 jumps

Time = 90 seconds

To find the average jump rate;

`Average \; jump \; rate = \frac {Total \; number \; of \; jumps}{Time}`

Substituting into the formula, we have;

`Average \; jump \; rate = \frac {140}{90}`

Average jump rate = 1.5555 ≈ 1.6 jumps/seconds.