Answer:
Ray 23
Step-by-step explanation:
Using the student id given above, a = 19 and b = 7
Average speed for the first 54 km = 48+a km/h
Plug a = 19
Average speed for the first 54 km = 48+19 = 67 km/h
Average speed for remaining 86 km = 43-b km/h where b = 7
Average speed = 36 km/h
Average speed of entire journey = total distance / total time taken
![speed = \frac{distance}{time} and time = \frac{distance}{speed}](https://tex.z-dn.net/?f=speed%20%3D%20%5Cfrac%7Bdistance%7D%7Btime%7D%20%20and%20%20time%20%3D%20%5Cfrac%7Bdistance%7D%7Bspeed%7D)
Time taken to cover 54 km =
hr
Time take to cover 86 km =
hr
Total time taken = 3.2 hours.
Total distance = 86+54= 140 km
Average speed of the entire trip =
= 43.75 km/ h
Answer: (p/5) + 30
Step-by-step explanation:
We are dividing the parking amount they had to pay by the 5 friends since they are splitting the amount they pay. Then we are adding 30 because that is how much each friend is paying.
Answer:
Given
- students have a pet = 30
- students do not have a pet = 47
Let number of students who have a pet denoted by "X" And number of students who do not have a pet denoted by "Y"
Step-by-step explanation:
Ratio of students who have a pet = [100 - (X/Y * 100)]
Ratio of students who have a pet = [100 - (30/47 * 100)]
Ratio of students who have a pet = [100 - (67.8)]
<u>Ratio of students who have a pet = 36.2</u>