Question

Tenesha likes to bike and Tentered a challenge to bike 100 miles. She iscomfortable biking 8 miles each day after school, but cannot bike on Tuesdayswhen she helps her mom at home. How many weeks will it take Tenesha tocomplete the challenge?*

Answer 1

Tenesha bikes 8 miles each day, so she is going to need X days to complete the challenge. X can be calculated as:

$X=\frac{100miles}{8}=12.5\text{ days}$

Then, she goes to school 5 days every week and there is a day in which she can't bike, so she bikes just 4 days per week.

Therefore, the number of weeks Y that Tenesha needs to complete the challenge can be calculated using a rule of three as:

4 days ------------- 1 week

12.5 days ---------- Y

Solving for Y, we get:

$Y=\frac{1\text{ week}\cdot12.5\text{ days}}{4\text{ days}}=3.125\text{ weeks}$

Answer: she needs 3.125 weeks to complete the challenge