Jake and Sara each drive 270 miles to attend a conference. Jake drives at an average

speed that is 15 mi/h slower than Sara’s average speed. It takes Jake 1.5 hours longer
than Sara to drive the 270 miles. How long does it Jake to make the trip?

1 answer

since time = distance/speed, If Jake's speed is x,

270/x = 270/(x+15) + 1.5
x = 45

So, it takes Jake 270/45 = 6 hours