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If the ratio of the first to second number is 3 : 4 and that of the second to the third number is 8 : 5, and sum of three numbers is 190 then the third number is:

A50

B45

C40

D55

Answer:

A. 50

Read Explanation:

⇒ A : B = 3 : 4 …..(1) ⇒ B : C = 8 : 5 …..(2) Multiplying (1) by 2, ⇒ A : B = 6 : 8 ⇒ B : C = 8 : 5 ⇒ A : B : C = 6 : 8 : 5 Sum of ratio = 6 + 8 + 5 = 19 ⇒ C = (5/19) × 190 = 50


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