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mojhsa [17]
3 years ago
10

Fireman A climbs up 15 rungs of a ladder in 5 seconds, Fireman B climbs up 12 rungs of a ladder in 6 seconds, and Fireman C clim

bs up 14 rungs of a ladder in 7 seconds. Which firemen climb the ladder at the same rate?
Mathematics
1 answer:
Goshia [24]3 years ago
4 0
<h2>Fireman B,Fireman C</h2>

Step-by-step explanation:

Let the rate of fireman A be r_{a}.

Let the rate of fireman B be r_{b}.

Let the rate of fireman C be r_{c}.

Rate of any fire man is defined as the ratio of number of rungs of ladder he climbed to the time he takes to climb them.

It is given that fireman A takes 5 seconds for 15 rungs.

r_{a}=\frac{15}{5}=3.

It is given that fireman B takes 6 seconds for 12 rungs.

r_{a}=\frac{12}{6}=2.

It is given that fireman C takes 7 seconds for 14 rungs.

r_{a}=\frac{14}{7}=2.

It is evident from above data that fireman B,C climb ladder at the same rate.

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