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The ratio of water and alcohol in two different containers is 2:3 and 4:5. In what ratio we are required to mix the mixtures of two containers in order to get the new mixture in which the ratio of alcohol and water be 7:5?

A. 2018-02-20 07:03:00

B. 2018-02-20 05:03:00

C. 2018-02-20 08:05:00

D. 2018-02-20 02:07:00

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Correct choice: B

Explanation:

W1:A1 W2:A2 ..... WN:AN 2 : 3 4 : 5 5 : 7 W1W1+A1 = 25 W2W2+A2=49 WNWN+AN = 512= 72/180 = 80/180 = 75/180 => 5 : 3 Therefore, the ratio is 5: 3

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Arithmetic Ability Alligation or Mixture

Arithmetic Ability
Alligation or Mixture