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
Tanya [424]
2 years ago
13

During a trip, a driver travelled a distance of 80km at an average speed of 60km/hr.He then changed his speed and travelled the

remaining 20km of his journey at 30km/hr. What was the drivers average speed for the entire journey?
Show all working!!​
Mathematics
1 answer:
oksian1 [2.3K]2 years ago
4 0

Answer:

50 km/hr

Step-by-step explanation:

D = RT

Time for first part of trip = 80/60 = 4/3 hr.

Time for second part of trip = 20/30 = 2/3 hr.

total time for entire trip = 4/3 + 2/3 = 6/3 = 2 hr.

Total distance = 100 km

Average rate of speed for entire trip = 100/2 = 50 km/hr

You might be interested in
Martina drove 737 miles in 11 hours. At the same rate, how long would it take her to drive 335 miles?
Dmitriy789 [7]

Answer:

5 hours

Step-by-step explanation:

737mi / 11hr = 67mph

335mi / 67mph = 5hr

7 0
2 years ago
Read 2 more answers
A circle with centre O has a radius of 6.2 cm.
Paul [167]

Answer:

it could either be 10.781 or 65.6, if not either of em then iam truly very sorry

Step-by-step explanation:

6 0
2 years ago
Can someone help me on 2/3-3/8 show work
Nat2105 [25]

Answer:

It is 7/24

Step-by-step explanation:

So first you want a common denominator so we have to find the least common multiple of 3 and 8, which is 24.

Next you have to multiply the same to the numerator, I usually go by the phrase whatever you do to the bottom you do to the top. So 8 times 2 is 16 and 3 times 3 is nine.

Everything changed should be 16/24-9/24

then we do 16-9 is 7 and you never subtract the denominators so 2/3-3/8 is 7/24

8 0
3 years ago
The previous balance in your check register $234.67 . You make a deposit of 150.00 .You write a check for $63.23 . What is your
skelet666 [1.2K]

Answer:

321.44

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
HELPPPPPPPPPP
mrs_skeptik [129]

Answer:

5 1/3 gallons

Step-by-step explanation:

Equation: 8 1/6 - 2 5/6

8-2=6

1/6-5/6= -4/6

6-4/6=5 2/6

Simplify:

5 1/3 gallons

7 0
3 years ago
Other questions:
  • Gina walked 2/3 mile to a baseball field from her school. She then walked 1/4 mile home. About how many miles did Gina walk?
    6·1 answer
  • Flying against the wind, an airplane travels 4000 kilometers in 5 hours. Flying with the wind, the same plane travels 5040 kilom
    5·1 answer
  • What is the solution to the system y>-2x+2 and y>-2x+5?
    6·1 answer
  • What is the greatest common factor (gcf) of 36 and 44
    8·2 answers
  • The line y=-1/2x+3 is perpendicular to which line
    7·1 answer
  • What is 4x + 2y = 20 in slope-intercept form?
    12·2 answers
  • Triangles MNO and RST are shown.
    15·1 answer
  • Statement that explains how the values of 36 and 360 are different.
    7·1 answer
  • Need help I only have 7min​
    10·2 answers
  • Steve saw 313 birds during a bird-watching trip to Yellowstone National park. he observes 15 more trumpeter swans than sandhill
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!