Question

The fisherman’s ropes are proportional in their length and weight. A rope the length of 30 m has a weight of 2 kg. Use this proportion of length to weight to determine the weight of a rope with the length of 105 m.

The 105 m rope weighs ______kg.

Question 14 options:

A)
52.5 kg


B)
7 kg


C)
28 kg


D)
15 kg

Answer 1

should be 7 and ill tell you how i got that, devide 2 by 30 to get the ratio which is 0.66666 and then multiply 0.66666 by 105 and you get 7

Answer 2

if this helped plz medal and fan :)

Answer 3

\(l \propto W\)

\(\implies l = k W\)

\(\implies \dfrac{l_1}{l_2} = \dfrac{ W_1}{W_2}\)

\(\implies \dfrac{30}{105} = \dfrac{ 2}{W_2}\)

\(\implies W_2 = \dfrac{2 \cdot 105}{30} = 7\)