Multiple choice

A 10 kg mixture of sand and salt 40% is sand. How much salt should be added so that ratio of salt and sand became 4 : 1 in new mixture?

  1. 4 kg

  2. 10 kg

  3. 5 kg

  4. Can't be determined

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In 10kg mixture: sand = 4kg, salt = 6kg. Adding x kg salt: new ratio salt/sand = 4/1. So (6 + x)/4 = 4/1, giving 6 + x = 16 and x = 10. Option B is correct.

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