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3 years ago

David travels from Building A to Building B. He can either cycle

Mathematics

1 answer:

Lelechka [254]3 years ago

3 0

Answer:

43 minutes

Step-by-step explanation:

Let cycling speed be x and driving speed be y

Equations as per given, considering same distance in both cases:

19x + 8y = 13x + 10y
19x - 13x = 10y - 8y
6x = 2y
3x = y

We see that driving speed is 3 times greater than cycling speed

Then 8 minutes driving = 8*3= 24 minutes of cycling, or 10 minutes of driving = 10*3= 30 minutes of cycling:

19 + 24 = 43 minutes or
13 + 10*3 = 43 minutes is the time to cycle between A and B

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