HoonieBear
Answered

Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Experience the ease of finding accurate answers to your questions from a knowledgeable community of professionals. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

please solve the question and give correct answer with explanation so that i can understand it​

Please Solve The Question And Give Correct Answer With Explanation So That I Can Understand It class=

Sagot :

mhanifa

Answer:

  • Yes

Step-by-step explanation:

Let the speed of the car is c and speed of the plane is p.

We are given:

The speed of the plane is 7 times the speed of the car

  • p = 7c

The distance traveled is

  • d = 315 km

The time difference to travel this same distance is 3 hours.

We know that:

  • d = ts, where d- distance, t- time, s - speed

Find the time for car and plane and their difference.

Car

  • t = d/s = 315/c

Plane

  • t = d/s = 315/p = 315/(7c) = 35/c

The difference

  • 315/c - 45/c = 3

Solve it for c:

  • (315 - 45)/c = 3
  • 270/c = 3
  • c = 270/3
  • c = 90 km/h

Now find the speed of plane:

  • p = 7c = 7*90 = 630 km/h

As we see, Jenny is right

Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.