Distance from A to B = 200 miles,
Distance from B to C = 300 miles,
Distance from C to D = 540 miles
The speed from B to C is 50% more than A to B. The speed from C to D is 50% more than B to C. If the speed from A to B is 40 miles per hour, find the average speed from A to D.
Answers
SOLUTION:-
•Step:1
Speed ( from A to B ) = 40 miles/hour
Speed ( from B to C ) = 60 miles/hour (50% more)
Speed ( from C to D ) = 90 miles/hour (50% more)
•Step:2
Formula to find time is
= Distance / Time
Time (A to B) = 200 / 40 = 5 hours
Time (B to C) = 300 / 60 = 5 hours
Time (C to D) = 540 / 90 = 6 hours
Total time taken from A to D is
= 5 + 5 + 6
= 16 hours
Total distance from A to D is
= 200 + 300 + 540
= 1040 miles
•Step:3
Formula to find average speed is
= Total distance / Total time
= 1040 / 16
= 65
So, the average speed from A to D is 65 miles per hour.
Answer:
The Answer is 65 miles per hour.
Step-by-step explanation:
Step 1
Given :-
Speed ( from A to B ) = 40 miles per hour
Speed ( from B to C ) = 60 miles per hour (50% more)
Speed ( from C to D ) = 90 miles per hour (50% more)
Step 2 :
Formula to find time = distance/time
Time (A to B) = 200 / 40 = 5 hours
Time (B to C) = 300 / 60 = 5 hours
Time (C to D) = 540 / 90 = 6 hours
Total time from A to D = 5+5+6= 16hrs
Total distance from A to D=200+300+540=1040
Final step :
Vav= Total distance/total time
=. 1040/16=65 miles per hour
I hope this will help you .