Question

Julissa drives form C city to M city, a distance of 154 miles. If she leaves C city at 8am and arrives at M city at 10:45 am, what is her average rate of speed?

Answer 1

total distance/ total time = average speed

just take care of units you'll use..

Answer 2

154/2:45

Answer 3

2:45 ?
o.O

Answer 4

154/165?

Answer 5

yep..
what'll be units of speed here ?

Answer 6

mph

Answer 7

i got .93

Answer 8

?

Answer 9

why mph ?

i guess you used time in minutes ?

Answer 10

oh

Answer 11

anyways, 0.93 is correct ..
so,,what'll be the unit ?

Answer 12

hey but its not in the answer choice!! a.58 b62 c54 d56 e59

Answer 13

convert that into miles per hour i guess then..
miles you;re right..
just convert 165 mins into hours..

Answer 14

that would be 154/2:45?

Answer 15

2:45 ? whats that?
that involves both hours and minutes i.e. 2 hours and 45 minutes
try and convert totally into hours..

Answer 16

how would uu convert it?

Answer 17

hmm..
like this
1 hour = 60 mins
so 1 min = 1/60 hours
=> 45 mins = 45/60 hours

now can you convert whole 2 hours 45 mins into hours ?

Answer 18

so i got .75

Answer 19

3/4

Answer 20

that was just for 45 mins'
now also add 2 hours to it..
comeon,,why is this confusing you ?

Answer 21

2.75 but its no in the answer choices

Answer 22

not

Answer 23

2.75 correct

so your speed is 154/2.75 mph

Answer 24

56