1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Karo-lina-s [1.5K]
3 years ago
5

Two cars leave simultaneously from points A and B, the distance between which is 280 km. If the cars move to meet each other, th

ey’ll meet in 2 hours. But if they move in the same direction, then the car going from point A will catch up with the car going from point B in 14 hours. What is the speed of each of the cars?
Mathematics
2 answers:
tester [92]3 years ago
8 0
V1 = 80 km/hr

v2 = 60 km/hr

The speed of the car from point A is 80 km/hr while the speed of the car from point B is 60 km/hr.

Hope This Helps!
maxonik [38]3 years ago
6 0

Answer:

Speed of Car A is 80 km/h   and speed of Car B is 60 km/h.

Step-by-step explanation:

let v1 be speed of car A and v2 be speed of car B.

Then According to Question,

If they move in the same direction, then Car A will travel an ( x + 280 ) km while Car B will travel an x km. They both cover this in 14 hr.

using speed distance formula, we get

v1 × 14 = x + 280  

v2 × 14 = x  

v1=\frac{x}{14}+\frac{280}{14}=\frac{x}{14}+20  

v2=\frac{x}{14}  

v1 = v2 + 20 .................(1)

Moving towards each other, they'll collectively cover 280 km in 2 hours.

2 × (v1 + v2) = 280  

2 × (v2 + 20 + v2) = 280   (from eqn (1))  

v2 + v2 + 20 = 140  

2 × v2 = 120  

v2 = 60  

v1 = 60 + 20 = 80  

Therefore, Speed of Car A is 80 km/h   and speed of Car B is 60 km/h.

You might be interested in
The sum of two numbers is 57 and the difference is 13 what are the numbers
Rainbow [258]
Let the numbers be x and y

x  + y  =  57          ........(i)
x  -  y  =  13          ........(ii)

Add equations (i) and (ii)  to eliminate y

x  + y  + x  -  y   =  57 + 13
x + x  + y - y =   57 +13
2x  =     70
x  =  70/2 = 35

From (i)  x  + y  =  57
              35 + y = 57
                      y = 57 - 35
                      y  =   22

The numbers are 35 and 22.
5 0
2 years ago
Read 2 more answers
Need help on 6. 7. 8. 9. 10.
Alex17521 [72]
Answer:
6. Quadrant 3
7. Quadrant 1
8. Quadrant 4
9. Quadrant 2
10. They will be the same thing. It is a parallelogram so opposite angle are equal.
3 0
3 years ago
50 POINTS Please Help!! I'll mark you as Brainliest if correct!!<br> Question is attached.
jenyasd209 [6]

Answer:

(6,3)

Step-by-step explanation:

3 0
3 years ago
How many times does 3 go into 5?
Fofino [41]
3 goes into 5 one time


Hope this helped :)
6 0
2 years ago
Read 2 more answers
Simplify the expression<br> 13 (9x)
Ratling [72]

13(9x)

13 * 9x = 117x

5 0
3 years ago
Read 2 more answers
Other questions:
  • How many tens are there in 432.
    9·2 answers
  • The angles in a triangle are such that one angle is 128 more than the smallest angle, while the third angle is 2 times as large
    15·2 answers
  • Megan bikes west to get from her apartment to school after school she bikes 8 miles north to her friends house how far is megans
    13·1 answer
  • Convenience Stores A and B are 50 miles apart on a stretch of Hwy 12 which runs north/south. Convenience Store C is 14 miles nor
    9·1 answer
  • B. what is a real-world example or use of surface area?
    6·1 answer
  • Which property of addition is shown below? If x = 1 + 2i and y = –1 – 2i, then x + y = 0
    7·1 answer
  • 5x4x3(7-7)x334 what is the answer
    10·2 answers
  • Question is on attached photograph. ​
    15·1 answer
  • How many solutions does this graph have?
    9·1 answer
  • 1. Match the polynomial with its end behavior.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!