Answer:
Step-by-step explanation:
The train traveled 60 miles per hour since 360 miles divided by 6 hours gives you 60 mph
See picture for solution to your problem.
First of all, a meter is equal to 100cm.

Seb made a jump of
two and a half meters. (

or

)
Multiply 100 by 2.

Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.

Kirsty's jump was
10 centimeters longer.
Add 10 centimeters to the 250 centimeters.

Kirsty's jump was 260 centimeters high, or 2.55 meters.
The number is 28.
The equation would be:
237 + 6(x) = 405
The problem states that 6 times the opposite of a number, however, since the number sign was not given, we do not know whether it is in a positive or negative form. So we leave it as only x.
237 + 6x = 405
6x = 405 - 237
6x = 168
6x / 6 = 168 / 6
x = 28
To check:
237 + 6 (28) = 405
237 + 168 = 405
405 = 405