MATH SOLVE

3 months ago

Q:
# What was the average speed in km/h of:a boat that moves 15.0 km across a lake in 45 min? make sure that youdon’t forget to convert minutes into hours (1 hour= 60 minutes).

Accepted Solution

A:

Answer:The average speed of the boat is 20 km/hr.Step-by-step explanation:Given : A boat that moves 15.0 km across a lake in 45 min.To find : What was the average speed in km/h ?Solution : The distance a boat covered is 15 km.The time taken by boat to cross a lake is 45 minutes.Convert minute into hour,1 hour = 60 minute1 minute = [tex]\frac{1}{60}[/tex] hour45 minute = [tex]\frac{45}{60}[/tex] hour45 minute = 0.75 hourThe speed of the boat is given by,[tex]\text{Speed}=\frac{\text{Distance}}{\text{Time}}[/tex][tex]\text{Speed}=\frac{15}{0.75}[/tex][tex]\text{Speed}=20[/tex]The average speed of the boat is 20 km/hr.