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? बालू और नमक के 10 किलो मिश्रण में 40% बालू है, इसमें कितना नमक और मिला दे कि मिश्रण में नमक व बालू को अनुपात 4 : 1 हो जाये?

  1. 4 kg 4 किग्रा.

  2. 10 kg 10 किग्रा.

  3. 5 kg 5 किग्रा.

  4. Can't be determined तय नहीं कर सकते है

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

In 10 kg mixture: sand = 40% of 10 = 4 kg, salt = 60% of 10 = 6 kg. Let x kg salt be added. New mixture has salt = (6+x) kg and sand = 4 kg. We need (6+x) : 4 = 4 : 1, so (6+x)/4 = 4/1, giving 6+x = 16, so x = 10 kg. Option B is correct.

Keep practicing — related questions