Question

Two tanks A and B contain water at 30⁰C and 80⁰C respectively. Calculate the amount of water that must be taken from each tank to prepare 40 kg of water at 50⁰C-

• A. 24 kg, 16 kg
• B. 16 kg, 24 kg
• C. 24 kg, 20 kg
• D. 30 kg, 10 kg

Answer 1

Answer: (A)

24 kg, 16 kg

Answer 2

m × 1 × (50 – 30) = (40 – m) × (80 – 50)

2m = 3 (40 – m) ̃ 5m = 120 ̃ m = 24 kg

So, A = 24 kg & B = 16 kg