If a : b : c = 7 : 3 : 5, then (a + b + c) : (2a + b – c) is equal t – InterviewSolution

1.

If a : b : c = 7 : 3 : 5, then (a + b + c) : (2a + b – c) is equal to(a) 1 : 2 (b) 2 : 3 (c) 3 : 4 (d) 5 : 4

Answer»

(d) 5 : 4

a : b : c = 7 : 3 : 5

⇒ a = 7k, b = 3k, c = 5k

∴ (a + b + c) : (2a + b – c)

= (7k + 3k + 5k) : (14k + 3k – 5k)

= 15 k : 12k = 5 : 4

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