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Chapter 3: Q. 418 (page 409)

Anthony drove from New York City to Baltimore, a distance of 192miles. He left at3:45 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.

Short Answer

Expert verified

Anthony's driving speed in heavy traffic and light traffic is 32mphand 68mph.

Step by step solution

01

Step 1. Given information.

Consider the given question,

Distance between New York City and Baltimore is 192miles.

02

Step 2. Make the table.

Assume the driving speed of Anthony in heavy traffic to be x and light traffic to be y.Then,

y=4+2x

Make the table,

03

Step 3. Form the equation.

Consider the table, we can say,

1.75x+24+2x=1921.75x+8+4x=1925.75x=184x=32mph

Then,

y=4+232y=4+64y=68mph

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