1727 remainder 4
I had to write out
SOLUTION
At the same time t,
Train 1 would have covered a distance of 80t, since distance = average speed x time.
Train 2 would have covered a distance of 70t.
Now both added should give 210 miles
That is 80t + 70t = 210
150t = 210
t = 210/150
t = 1.4 hours
Answer:
58.29
Step-by-step explanation:
1/2 × (7+10.4) × 6.7
= 58.29