Question

What number has a 5:1 ratio to the number 10?
A. 42
B. 50
C. 55
D. 62

Answer 1

We can find equivalent ratio by multiplying both sides of the ratio with the same factor.

E.G.

Ratio = 1 : 3

If we multiply the ratio with the factor 4, we get 4 : 12

⇒ 1 : 3 is equivalent to 4 : 12

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Ratio: 1 : 5 (Given)

If we multiply the ratio by 10:

Ratio = 5 x 10  : 1 x 10

Ratio = 50  : 10

Answer: 50

Answer 2

We can discover equal proportion by duplicating the two sides of the proportion with a similar factor.

E.G. Proportion = 1 : 3 If we increase the proportion with the factor 4, we get 4 : 12

⇒ 1 : 3 is comparable to 4 : 12 Ratio: 1: 5 (Given) If we duplicate the proportion by 10: Ratio = 5 x 10: 1 x 10 Ratio = 50: 10.