Question

Two cars leave towns
400
kilometers apart at the same time and travel toward each other. One car's rate is
12
kilometers per hour more than the other's. If they meet in
2
hours, what is the rate of the faster car?

Answer 1

@kevindragonlord @sangya21 @UltimateWitherLord @uri @Kit_Kat_Nat_<3 @Lori_The_Time_Lady_ @nelsonjedi can u help

Answer 2

hmmm let me think

Answer 3

I need to know at least the speed of one car.

Answer 4

it says one car's rate is 12 kilometers @kevindragonlord

Answer 5

@freckles @camper4834 can u helpo

Answer 6

one of them are going 200 kph and the other is going 188kph

Answer 7

refer this
http://openstudy.com/users/mathmath333#/updates/545bd96ee4b053df5cc23694

Answer 8

actually wait one of them would be going 200kph and the other 212kph

Answer 9

Deandre drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took
8
hours. When Deandre drove home, there was no traffic and the trip only took
5
hours. If his average rate was
21
miles per hour faster on the trip home, how far away does Deandre live from the mountains?
Do not do any rounding.

Answer 10

400=2*(x+(x+12))
400-24= 4x
x = 94
x+12=106 kmph for the faster car
check
400 = 2*94 + 2*106
400 = 188 + 212
400 = 400

Answer 11

i got the answer already, can u help with this one @mathmath333 @mathstudent55 @uri @sangya21 Deandre drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took
8
hours. When Deandre drove home, there was no traffic and the trip only took
5
hours. If his average rate was
21
miles per hour faster on the trip home, how far away does Deandre live from the mountains?
Do not do any rounding.

Answer 12

let x=driving speed to Deandre
x+26=driving speed on return trip
distance=speed*travel time
..
8x=5(x+21)
8x=5x+105
3x=105
x=35
x+21=46
driving speed to deandre=35 mph
driving speed on return trip=46 mph

Answer 13

your speed and time is given
8 hours and 35mph
distance = 8 *35 = 280 miles

Answer 14

A car passes a landmark on a highway traveling at a constant rate of
55
kilometers per hour. One hour later, a second car passes the same landmark traveling in the same direction at
63
kilometers per hour. How much time after the second car passes the landmark will it overtake the first car?
Do not do any rounding.

Answer 15

@sangya21 @mathmath333 @mathstudent55 @lizzyrockefeller can u help ^^