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in Commercial Mathematics by (47.3k points)
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It is given that l varies directly as m.

(i) Write an equation which relates l and m.

(ii) Find the constant of proportion (k), when l is 6 then m is 18.

(iii) Find l, when m is 33.

(iv) Find m when l is 8.

1 Answer

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by (49.8k points)
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Best answer

Since l varies directly as m.

a. Equation related to l and m is 1/m = k (constant)

b. if l = 6 and m = 18, then k = 6/18 = 1/3

c. If m = 33, then

1/m = 1/3

1/33 = 1/3

l = 33/3 = 11

d. If l = 8

1/m = k

8/m = 1/3

m = 8 x 3 = 24

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