The traffic police recorded the speed (in km/h) of 10 motorists as 48, 52, 57,
55, 42, 39, 60, 49, 53 and 47. Later an error in recording instrument was found.
If the instrument had recorded the speed 5 km/h less in each case, then the
correct average speed of the motorists is
Answers
Answered by
2
Answer:
THE AVERAGE SPEED OF THE MOTORIST IS 78KM/H
Answered by
1
Answer:
55.2
Step-by-step explanation:
Given that The traffic police recorded the speed (in km/h) of 10 motorists as 48, 52, 57, 55, 42, 39, 60, 49, 53 and 47.
Recorded speed is 5 km/h less in each case.
So new average will be:
[(48 + 52 + 57 + 55 + 42 + 39 + 60 + 49 + 53 + 47) + ( 10 × 5)] ÷ 10
= (502 + 50)/10
= 552/10
= 55.2
Similar questions