If (a + b) : (b + c) : (c + a) = 7 : 8 :

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If (a + b) : (b + c) : (c + a) = 7 : 8 : 5 and a + b + c = 20 then the value of c is :

Options:

Correct Answer:

Explanation:

(a + b) : (b + c) : (c + a) = 7 : 8 : 5

2(a + b + c) = 20x

a + b + c = 10x = 20

x = \(\frac{20}{10}\) = 2

Now,

⇒ (a + b + c) - (a + b) = 20 - 7x = 20 - 14 = 6

⇒ c = 6