Question

Two trains left the station at the same time. One headed north at 55 mph and the other headed south at 70 mph. How many miles apart were the trains at the end of 3 hours?

Answer 1

Explanation:

Answer 2

45 miles

Explanation:

v = d/t => d = v×t

• How many miles apart were the trains at the end of 3 hours?

d = v₂t - v₁t

= 70mphₓ3h - 55mphₓ3h

= (70mph - 55mph)ₓ3h

= 15mphₓ3h

= 45 miles