Question

Eva maintained an average speed of 35 miles per hour (mph) for the first m hours of her road trip. For the next n hours of the trip, she drove at an average speed of 60 mph. Eva drove a total of 225 miles in 4.5 hours.

Which of the following systems of equations could be used to
find how many miles Eva drove in the first m hours of the trip?

Answer 1

Explanation:

I don't see the choices, but I will make the equations that seems to be correct to me.

Known facts:

• maintained an average speed of 35 miles per hour (mph) for the first m hours of her road trip.
• next n hours of the trip, she drove at an average speed of 60 mph.
• Eva drove a total of 225 miles in 4.5 hours.

Let's make the equations:

m + n = 4.5

35m + 60n = 225

Hope that helps!