Josie took a road trip. She drove for 45 minutes at 70 miles per hour. Then she drove for 15 minutes at 20 miles per hour. How f
ar did Josie drive? Round to the nearest mile.
A
3450 miles
B
150 miles
C
90 miles
D
58 miles
2 answers:
C. I'm pretty sure that's the answer I hope it helps
Answer:
D
. 58 miles
Step-by-step explanation:
In order to find the distance travelled (d) in each stage, we will use the following expression.
d = v × t
where,
v: speed
t: time
First stage
v = 70 mi/h
t = 45 min × (1 h / 60 min) = 0.75 h
d = v × t = 70 mi/h × 0.75 h = 53 mi
Second stage
v = 20 mi/h
t = 15 min × (1 h / 60 min) = 0.25 h
d = v × t = 20 mi/h × 0.25 h = 5.0 mi
The total distance tyraveled is 53 mi + 5.0 mi = 58 mi
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