Answer: 89 miles driven in the afternoon
Explanation:
Let x be the total number of miles driven in the morning, and y in the afternoon.
Firstly, we know the total miles driven.
x + y = 248
Next, we know he drove 70 fewer miles in the morning.
x - 70 = y
Our system of equations:
x + y = 248
x - 70 = y
To solve, we will substitute one of the equations into the other.
x + y = 248
x + (x - 70) = 248
2x = 318
x = 159 miles in the morning
To solve for miles driven in the afternoon, we will substitute this value back into one of the equations and solve for y.
x - 70 = y
(159) - 70 = y
y = 89 miles driven in the afternoon