math problem?

Question

it take mr adams 3/4 an hour to drive 45 miles. if he is driving 135 m how long will it take him to get there?

Answer 1

first of all you have to figure out his general speed.
speed = distance / time
so, speed = 45 / (3/4), therefore, speed = 60
So, you know that 60 miles per hour is the speed.
then you use the equation speed = distance / time again, except you reformat it to be time = distance / speed.
so, time = 135 / 60 that is equal to 2.25 hours OR 2 and (1/4) hours OR 2 hours and 15 minutes

I hope that helps.

Answer 2

3/4 hour is 45 minutes
45 miles in 45 minutes
1 mile in 1 minute
135 miles in 135 minutes
i.e. 2 hours 15 minutes

Answer 3

Since it takes him 3/4 hours to drive 45 miles, to find out how much he drives in one hour, you divide 45 by 3/4, which is 60 miles per hour. Then to see how long it would take to drive 135 miles, you do 135 divided by 60, which is 2.25. It would take 2 1/4 hours to drive 135 miles.

Answer 4

3/4 min = 45 min
actually a minute a mile

Answer 5

D=rt
45=3/4r
multiply both sides by 4/3
r=60mph

second part of problem
D=rt
135=60t
divide both sides by 60
135/60 reduces to 9/4 which is 2 and 1/4
t=2 1/4 or 2 hours and 15 minutes

Answer 6

1 hr for 60 m<----45/(3/4)
135/60=2.25hr
2 hr and 15 mins <----.25 times 60

Answer 7

2 hours 15 minutes

Answer 8

2 hours 15 minutes

Answer 9

3/4 of an hour = .75 hrs. 45 miles / .75 hours = 60 miles/hour. I assume you mean "mi" for miles and not "m" for meters. If it is miles, (135 miles) / (60 miles / hour ) = 2.25 hours.

Answer 10

135 minutes