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Ratio and Proportion Practice Test 1

Question : 12 of 40

Marks: +1, -0

\frac{x}{11} = \frac{y}{15}

, then (x + 11) : (y + 15) is equal to:

Solution: 👈: Video Solution

Concept:

When two ratios are equal, take a common constant to express both variables.

Explanation:

Let

\frac{x}{11} = \frac{y}{15} = k

Then

x = 11k

and

y = 15k

So,

\frac{x+11}{y+15} = \frac{11k+11}{15k+15}

Factor out the common term:

\frac{11(k+1)}{15(k+1)} = \frac{11}{15}

Therefore,

(x+11):(y+15) = 11:15

Answer:

11:15

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