Multiple choice

In ____ liters mixture of solution of salt and water; 0.25 part is salt. _____ liter water is evaporated so that the part of the salt in the final solution of 54 liter becomes 0.35. Find the missing figures. नमक और पानी के _____ लीटर मिश्रण में 0.25 हिस्सा नमक है. _____ लीटर पानी वाष्पित करने पर 54 लीटर के अंतिम मिश्रण में नमक का हिस्सा 0.35 हो गया। लापता आंकड़े का पता लगाएं।

  1. 8.1, 5.4

  2. 81, 5.4

  3. 75.6, 21.6

  4. 81, 54

  5. None of these इनमे से कोई नही

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let initial mixture be V liters with 0.25V salt. After evaporating x liters, volume = V-x = 54L, and salt becomes 0.35. Salt amount is constant: 0.25V = 0.35×54 = 18.9. So V = 18.9/0.25 = 75.6L. Water evaporated = 75.6 - 54 = 21.6L. Answer: 75.6, 21.6 matches option C.