Question

A construction crew is lengthening a road. The road started with a length of 56 miles, and the crew is adding 2 miles to the road each day.

Let L represent the total length of the road (In miles), and let D represent the number of days the crew has worked. Write an equation relating to D. Then use
this equation to find the total length of the road after the crew has worked 34 days.

Answer 1

L = 56 + 2D

124 miles

Explanation:

Let L = total length of road (in miles)

Let D = number of days

⇒ L = 56 + 2D

Substitute D = 34 into L = 56 + 2D and solve for L:

L = 56 + (2 x 34)

⇒ L = 56 + 68

⇒ L = 124 miles