Question

Mr. Ramos drove at an average speed of 80 km/h from Town A to Town B. The distance from Town A to B is 400 km. On the way back, he increased hid speed by 20 km/h. How much time did Mr. Ramos take for the return journey?

(Need formula/solution please.)

Answer 1

Answer: 4 hours. (Note, it said "return journey"!! Could throw others off)

How-To: Mr. Ramos went at 80km/h the way there, on the return it said he was 20km/h faster, so on the return journey he was going 100km/h. He was traveling 400km, so (400km)/(100km/h)=4h