Multiple choice

In a mixture of 50 litres the ratio of acid to water is 4:1. Another 6 litres of water is added to the mixture. The ratio of acid to water in the new mixture is-

  1. $5:2$
  2. $2:5$
  3. $3:5$
  4. $5:3$
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A Correct answer
Explanation

In 50 litres with acid:water ratio 4:1, acid = 40 litres, water = 10 litres. After adding 6 litres water, new water = 16 litres. New ratio = 40:16 = 5:2 when simplified.

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