Question

Two cars drive in the same direction along a straight road, at a constant speed - one at 70 km/hr and the other at 80 km/hr. Assuming that they start at the same point and at the same time, how much sooner would the faster car arrive at a destination 460 km away?
a.
49 minutes
c.
5.75 hrs
b.
6.6 hrs
d.
741 minutes

Answer 1

d.
741 minutes

Answer 2

only if your assumption of them starting at the same point and time is correct if its wrong then we dont know....

Answer 3

Joe is on a cross-country trip from New York to Los Angeles. He drives for 45.0 min at 70.0 km/h, 10.0 min at 95 km/h, and 30.0 min at 55.0 km/h, and he spends 20.0 min eating lunch and buying gas. What is the average speed for this part of his trip?
a.
67.6 km/h
c.
54.7 km/h
b.
68.4 km/h
d.
53.8 km/h
@soty2013

Answer 4

D.) 741 minutes is not correct.

Answer 5

then what is it?

Answer 6

460 / 80 = 5.75 hours
460 / 70 = 6.5714285714285714285714285714286 hours

6.5714285714285714285714285714286 - 5.75 = 0.82142857142857142857142857142857

0.82142857142857142857142857142857 * 60 = 49.285714285714285714285714285714 minutes.

The answer is A.