In a triathlon, Farhan swims a distance of 1.5 km at an average speed of 2.5 km/h, cycles 40 km in 1/1/2 hours and runs at an average speed of 9 km/h for 1/1/9 hours. Find his average speed for the entire competition.
Answers
Answer:
6.69 kmph is the average speed
Step-by-step explanation:
by using the formula, Speed= Distance/ time
and by Average Speed= Total distance/ total time
Answer:
In a triathlon, Farhan swims a distance of 1.5 km at an average speed of 2.5 km/h, cycles 40 km in 1/1/2 hours and runs at an average speed of 9 km/h for 1/1/9 hours. The average speed for the entire competition is 16.038 km/h
Step-by-step explanation:
Average Speed = Total distance / Total time
Let's calculate the total distance below:
Total distance = distance he swims + distance he cycles + distance he runs
Distance = time × speed
Time = Distance / speed
Distance he swims = 1.5 km
Distance he cycles = 40 km
Runs = 9 × 10/9 = 10 km
Total distance = 1.5 + 40 + 10 = 51.5 km
Total time = Swimming time + Cycling time + Running time
Swimming time = 1.5/2.5 = 0.6 hours
Cycling = 1.5 hours
Running = 1 1/9 hours
Total time = 1 1/2 + 1 1/9 + 3/5 = 3 19/90 hours
Average speed = 51.5 ÷ 3 19/90 = 16.038 km/h