Tom walked at a consistent pace from the economy parking garage to the airport terminal. He stood on a a moving sidewalk for 2/5

Question

4 years ago

10

Tom walked at a consistent pace from the economy parking garage to the airport terminal. He stood on a a moving sidewalk for 2/5

of the route, moving at twice his normal walking pace. He made the trip in 6 minutes. On his return trip, the moving sidewalk was out of order, so how long did it take him to walk back?

Mathematics

1 answer:

Mariulka [41] · Answer 1 · 2021-11-13T22:35:12+03:00

Let x be the number of minutes for his normal walk

On the way to the airport, for the 2/5 (or 40%) of his route, his speed is twice faster. Hence, the number of x should be divided to 2. The rest of the route (60%) was on his normal pace. The total minutes is 6. The equation is:

0.4(x÷2) + 0.6x = 6

<span>Solving for x, the number of minutes for his normal walk is 7.5 minutes.</span>