Question

A train travels 42 kilometers in 15 min.

How far will the train travel in 3 hours at that speed.

A. 168km
B. 336km
C. 504km
D. 672km

Answer 1

@shadow13

Answer 2

What do you think the answer is?

Answer 3

The answer is C)

Method 1:
There are 60 minutes in an hour, so 4 x 15 minutes
3 hours = (15 x 4) x 3 = 15 x 12
So there are 12 blocks of 15 minutes in 3 hours.

You can then do: 12 x 42 = 504 km
The train travels 504km in 3 hours.

Method 2:
42 km in 15
15 x 4 = 1 hour and 42 x 4 = 168
so, it travels 168km in an hour

168(km) x 3(hours) = 504km in 3 hours

Answer 4

60*3=180
180*42=7560
7560/15=504
@manish00333 is correct

Answer 5

\(15 ~min = 0.25 ~h\)

\(\dfrac{42~ km}{15~min} = \dfrac{42~km}{0.25~h} = 168 \dfrac{km}{h} \)

\(168 \dfrac{km}{\cancel h} \times 3~\cancel h = 504~km\)

Answer 6

Don't just give out answers. @manish00333

Answer 7

Thanks @mathstudent55 @black_ninja123@manish00333