Question

a yacht sailed 40 kilometers, from the west side of lake nettle to the east side. the yacht starting sailing 4 hours after sunrise, at a constant velocity of 80 kilometers per hour to the east. how much time did the yacht take to sail across the lake? write your answer to the tenths place. hours

Explanation:

Step1: Recall the time - distance - speed formula

We know that $t=\frac{d}{v}$, where $t$ is time, $d$ is distance, and $v$ is speed.

Step2: Substitute the given values

Given $d = 40$ kilometers and $v=80$ kilometers per hour. So $t=\frac{40}{80}$.

Step3: Calculate the result

$t = 0.5$ hours.

Answer:

$0.5$