Question 244155
This formula is well worth storing in your memory if you can: distance/time = speed. Remember when using this formula to keep the measurement units you use the same eg if your speed is in mph then your distance must be in miles and time in hours.

If d=distance and t=time and s=speed. d/t=s

What do we want to find? We want to find t and we know d and s. So we need to rearrange the fomula to equal t.

{{{d/t=s}}} times both sides by t gives
{{{d = s*t}}} divide both sides by s gives
{{{d/s = t}}}

Plug in the numbers and we are laughing! I shall leave you to do the last bit.

Let me know how you get on!