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If x : y : z = 3 : 4 : 5, then what will be the ratio of (xy):(yz):(zx)(\frac{x}{y}) : (\frac{y}{z}) : (\frac{z}{x})?

A49 : 37 : 100

B45 : 48 : 100

C41 : 37 : 100

D37 : 47 : 100

Answer:

B. 45 : 48 : 100

Read Explanation:

Solution:

Given:

 x : y : z = 3 : 4 : 5

Calculation:

Let x = 3k y = 4k and z = 5k

So value of (xy):(yz):(zx)(\frac{x}{y}) : (\frac{y}{z}) : (\frac{z}{x}) is

 3k/4k ; 4k/5k : 5k/3k

⇒ 3/4 : 4/5 : 5/3

⇒ (3/4) × 60 : (4/5) × 60 : (5/3) × 60

⇒ 3 × 15 : 4 × 12 : 5 × 20 = 45 : 48 : 100

 ∴ The correct option is 2


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