Solve Applications with Linear Inequalities · Review Exercise 110

Solve.

Anthony drove from New York City to Baltimore, a distance of 192 miles. He left at 3:45 and had heavy traffic until 5:30. Traffic was light for the rest of the drive, and he arrived at 7:30. His speed in light traffic was four miles per hour more than twice his speed in heavy traffic. Find Anthony’s driving speed in heavy traffic and light traffic.

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Elementary Algebra 2e · §3.6 Solve Applications with Linear Inequalities · Review Exercise 110