DSSSB · Mathematics

In a mixture of three varieties of tea, the ratio of their weights is 3 : 5 : 7. Now 3 kg tea of the first variety, 6 kg tea of the second variety and some quantity of the third variety are added to the mixture. The ratio of the weights of three varieties of tea becomes 7 : 12 : 15. Find the quantity (in kg) of the third variety of tea in the final mixture.

  1. 52
  2. 45
  3. 50
  4. 48
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