A car is to make a 240 mile trip. The driver estimates he will be traveling

Question

at an average rate of 25 miles per hour in the city, but at an average of 50 miles per hour on the freeway. If only 15 miles will be driven in city traffic, how long will it take this driver to make the 240 mile trip if everything goes according to his estimate?

5 hours and 6 minutes

4 hours and 48 minutes

4 hours and 30 minutes

4 hours and 21 minutes

Please explain.

Answer 1

5 hours and 6 minutes. Figure out your own homework. 25mph means it will take 2.4 minutes to go 1 mile. 2.4x15=36 minutes. 50mph= 1 mile every 1.2 minutes.1.2 x 225( you have to subtract the 15 miles)=270 minutes. 270 minutes+36 minutes=306 minutes. 306 minutes=5 hours and 6 minutes. Now go to bed.