Question

Two crews working toward each other are 6.75 miles apart one crew paves 1.3 miles of highway per day and the other paves 1.4 miles per day how long will it take them to meet

Answer 1

one crew is doing 1.3 miles daily, the other is doing 1.4 miles daily, so both together are doing 1.3 + 1.4 miles daily, namely 2.7 miles.

now, they are 6.75 miles apart, how many days will it be at a rate of 2.7 miles per day, that 6.75 miles will be done?    $\bf \cfrac{6.75}{2.7}$  days