SOLUTION: ajit started off eagerly and ran the first 350m of the race at 25.2km/h.then setting into a steady 18km/h he ran the next 1000m.he made a dash for it toward the finishing line,runn
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Question 93396: ajit started off eagerly and ran the first 350m of the race at 25.2km/h.then setting into a steady 18km/h he ran the next 1000m.he made a dash for it toward the finishing line,running the last150m at 27km/h.how much time did he take to finish the race and what was his average speed. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! ran the first 350m of the race at 25.2km/h.then setting into a steady 18km/h he ran the next 1000m.he made a dash for it toward the finishing line,running the last150m at 27km/h.how much time did he take to finish the race and what was his average speed.
Find the time of each of the 3 stages: Time = dist/speed
Change meters to km, divide by 1000 and you have
Stage 1 + Stage 2 + Stage 3 + +
:
The common denominator: 25.2*18*27 = 12700.8 = = = .072321 hr
:
.072321 & 60 = 4.34 min or about 4 min 20.4 sec
:
Average speed, (speed = dist/time): = = 20.74 km/hr
