Answer:
option D is correct
time will the ride take = 150 minutes
Step-by-step explanation:
Using formula:
.....[1]
As per the given condition:
Zachary's mother take time to rider her bike to the market = 25 minutes.
and the distance of the market away =
miles.
Then, substitute these value in [1] , we have;
miles per minutes.
It is also given that , if she rides with the same speed to the park that is
away.
To find how long will the ride take.
Using the same formula to find the time;
Let the time be t.
we have;
![\frac{7}{100} =\frac{\frac{21}{2}}{t}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B100%7D%20%3D%5Cfrac%7B%5Cfrac%7B21%7D%7B2%7D%7D%7Bt%7D)
By cross multiply, we have;
![7t = \frac{21}{2} \times 100](https://tex.z-dn.net/?f=7t%20%3D%20%5Cfrac%7B21%7D%7B2%7D%20%5Ctimes%20100)
Simplify:
![7t = 1050](https://tex.z-dn.net/?f=7t%20%3D%201050)
Divide by 7 both sides we get;
t = 150 minutes.
Therefore, 150 minutes will the ride take.