Carmen runs 4 miles in 30 min. At the same rate, how many miles would she run in 48min?
1 answer:
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Answer:
t= 2.52 hours
Step-by-step explanation:
It is given that for first 30 km, the speed of bicyclist is v km/hour
time taken to cover first 30 km is given by
(
)
for next 17 km the speed of bicyclist is 2 km/hour greater than his original speed
so the speed to cover next 17 km = v+2
time taken to cover next 17 km is given by
now total time t spent by the bicyclist to cover entire trip is given by
now if v=18 , we have
now to add fractions we make the denominator same
Hence we will find the LCM of 18 and 20
LCM of 18 and 20 = 180
now we need to make both the denominator equal to 180
hours (approx)
4.
5.
doesn't belong with the other three because it is irrational number
The other three can be expressed as a ratio between two <span>integers.
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5.
The other three can be expressed as a ratio between two <span>integers.
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