Answers

2014-06-12T12:09:45+08:00
400mph
250mph
 let x be the distance covered

400x+250x=1625

650x=1625

x=2.5 hours
0
2014-06-12T15:11:51+08:00
Given:
v_1=400 mph
v_2=250 mph
d_t=1625 miles

req'd:

t=?

formula:

distance=velocity  x  time

since they are traveling in the opposite the total distance is equal to

d_t=(v_1)(t)+(v_2)(t)

since they left at the same time

t_1=t_2

solve for t:

1625=(400)t+(250)t

1625=650t

t= \frac{1625}{650}

t=2.5 hrs
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