Let the time be t minutes
69t + 270t = 180
t = .....
Two lifts open their doors at the same time. Emmet boards the first one, which is going up at 69 metres per minute. The person next to him, Clarence, boards the second one, which is going down at 270 metres per minute. In how long will Emmet and Clarence be 180 metres apart?
1 answer