An airplane traveled 1,991.25 kilometers at an average speed of 885 kilometers per hour. How long did it take for the airplane t

Question

il63 [147K]

3 years ago

15

An airplane traveled 1,991.25 kilometers at an average speed of 885 kilometers per hour. How long did it take for the airplane t

o travel this distance? hours and minutes

Mathematics

2 answers:

abruzzese [7] · Answer 1 · 2022-03-19T01:34:10+03:00

abruzzese [7]3 years ago

5 0

This trip would take 2 hours and 15 minutes, since 1,991.25/885=2.25. This means it would take two hours and 25/100 (1/4) of an hour. 1/4 of an hour is 15, so you add 15 minutes to 2 hours.

Nitella [24] · Answer 2 · 2022-03-19T03:48:43+03:00

Answer:

It took 2 hours and 15 minutes for the airplane to travel 1,991.25 Km

Step-by-step explanation:

In order to find the time, you need to use the fact that average speed = distance traveled/time taken, the problem gives you that the distance traveled is equal to 1,991.25 Km and the average speed is 885 Km/h.

So, you use these values to find the time taken as follows:

$time = \frac{distance}{speed}=\frac{1991.25 km}{885 \frac{km}{h}} = 2.25 h$

2.25 is a number made by two parts: integer-part and fractional-part.

The integer-part is equal to 2 hours.

The 0.25 is the fractional-part and corresponds to the minutes. 0.25 in fraction is $0.25 = \frac{1}{4}$ , the hour has 60 minutes, so when you divided by $\frac{1}{4}$ you the get 15 minutes.