Question

When it is 4:00 a.m. in Honolulu, it is 2:00 p.m. in London. Just before Paul’s flight from Honolulu to London, he called his friend Nigel, who lives in London, asking what kind of clothing to bring. Nigel explained that London was in the middle of some truly peculiar weather. The temperature was currently 30°C, and was dropping steadily at a rate of 1°C per hour. Paul’s flight left Honolulu at 12:00 p.m. Thursday, Honolulu time, and got into London at 1:00 p.m. Friday, London time. What kind of clothing would have been appropriate for Paul to be wearing when he got off the plane?

a.
shorts and sandals, appropriate for around 90-105°F
b.
winter wear, appropriate for around 20-45°F
c.
street clothes, appropriate for around 70-85°F
d.
a light jacket, appropriate for around 50-65°F

Answer 1

d. a light jacket, appropriate for around 50-65°F

Explanation:

Given :

When it is 4:00 a.m. in Honolulu, it is 2:00 p.m. in London.

The temperature in London was currently 30°C, and was dropping steadily at a rate of 1°C per hour.

Paul’s flight left Honolulu at 12:00 p.m. Thursday, Honolulu time.

Paul’s got into London at 1:00 p.m. Friday, London time.

To Find : What kind of clothing would have been appropriate for Paul to be wearing when he got off the plane?

Solution :

First consider when it is 4:00 a.m. in Honolulu, it is 2:00 p.m. in London.

⇒ there is a difference of 10 hours in their timings (14:00-4:00= 10 hrs) .

Paul’s flight left Honolulu at 12:00 p.m. Thursday, Honolulu time (10:00 p.m. London time) and got into London at 1:00 p.m. Friday, London time.(3:00 a.m. Honolulu time)

Thus Paul’s flight left Honolulu at 12:00 p.m. Thursday, Honolulu time and got into London at 3:00 a.m. Honolulu time

⇒Total time taken to travel from Honolulu to London = 15 hrs

Now we are given the temperature was currently 30°C, and was dropping steadily at a rate of 1°C per hour.

Since temperature was dropping at a rate of 1°C per hour and Total time taken to travel from Honolulu to London 15 hrs

⇒temperature dropped in 15 hrs will be 15 *1°C = 15°C

Current temperature at London will be 30°C - 15°C = 15°C

Formula for conversion of Celsius into Fahrenheit :

T(°F) = T(°C) × 9/5 + 32

⇒T(°F) = 15× 9/5 + 32 = 59°F

So the current temperature when Paul reached London is 59°F

This temperature lies in Option D . So Option D is correct.

A light jacket, appropriate for around 50-65°F for Paul to be wearing when he got off the plane