What was Eugene's average speed?

Question

Eugene left the White House and traveled toward the lake. Jose left 0.7 hours later traveling 16.1 km/h faster in an effort to catch up to him. After two hours Jose finally caught up. What was Kali's average speed?

Answer 1

distance=rate*time

d=r*(2.7) for Eugene

d=(r+16.1)*2 for Jose

2.7r=2(r+16.1)

2.7r=2r+32.2

0.7r=32.2

7r=322

r=46 km per hour for Eugene

r+16.1=46+16.1=62.1 km per hour for Jose