Meera is competing in a triathlon. She cycles half the course then swims one thirtieth of the course. She then runs 14 km to the finish. How long is the course?
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Step-by-step explanation:
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time = distance/speed
5/(x/5) + 30/(5x) + 20/x
= 25/x + 6/x + 20/x
= 51/x
she has gone 5 + 30 + 20 = 55 km
b)
2 = x/5
so x = 10
and time = 51/10 = 5.1 hr
c)
40 = 5x
x = 8
time = 51/8 = 6.375
difference = 6.375 - 5.1 = 1.275
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Answer:
It will take only the course
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