Question

Becky and Don live 210 miles apart and plan to visit each other for a week. They decide to leave at the same time, drive toward each other, and meet somewhere along the route. Becky’s average rate of speed is 60 mph. Don’s average rate of speed is 80 mph. How long will it take them to meet each other?

Answer 1

If they don't stop 1 hour and a half.

90 miles away from Becky and 120 away from Don

Answer 2

It will 1.5 hours to Becky and Don to meet each.

Explanation:

Let the time at which Becky and Don will meet be t.

Speed of Becky =60 mile/hr

Distance covered by Becky in t time ,x=
`60miles/h * t`

Speed of Don = 80 mile/hr

Distance covered by Don in t time , y=
`80miles/h * t`

Distance between both of them of 210 miles.

`x+y=210 miles`

`60miles/h * t+80miles/h * t=210 miles`

`140 miles/h* t=210 miles`

`t=(210 miles)/(140 miles)=1.5 hours`

It will 1.5 hours to Becky and Don to meet each.