Question

Daniel's goal is to walk 100 miles.• He walks 5 miles every day.• He has

walked for 7 days. Daniel still needs to walk k more miles for his goal.
Which equation could be used to find how many more miles, k, Daniel
will have to walk to meet his goal

Answer 1

65 miles

Explanation:

Given:

• k = how many more miles Daniel has to walk
• Goal = 100 miles
• Daily miles = 5 miles
• Number of days already walked = 7 days

Equation:

5 × 7 + k = 100

Solving:

⇒ 5 × 7 + k = 100

⇒ 35 + k = 100

⇒ k = 100 - 35

⇒ k = 65