Question

3. A jet took one hour longer flying to Lincoln from Adams at 800 km/h than to return at

1200 km/h. Find the distance from Lincoln to Adams.

Answer 1

2400 km

Explanation:

distance=rate*time

d=rt

d=(800)(t+1)

d=(1200)(t)

the right sides are both equal to d so set them equal to each other

800(t+1)=1200(t)

800t+800=1200t

800=1200t-800t

800=400t

t=800/400

t=2 hours

d=1200*2

d=2400 km