Question

David drove 70 miles in the first 1 ¾ hours of his trip. How much longer should it take him to drive an additional 120 miles if he drives at the same average speed?

Answer 1

is that 70 miles in 1 3/4 hrs

Answer 2

yes

Answer 3

first convert 1 3/4 hrs to minutes what do you have?

Answer 4

105 min

Answer 5

so the speed is \[\frac{70 miles}{105 minutes}\] we know that speed = distance over timehere ffore time = distance over speed agree?

Answer 6

yes

Answer 7

distance over time therefore*

Answer 8

\[\large time = \frac{distance}{speed}\] go plug in your distance and speed to find time

Answer 9

180 correct?

Answer 10

\[Speed = \frac{distance}{time}\]

Answer 11

@teddydog change to hours then you're all set

Answer 12

so 3 hrs?

Answer 13

yep