Condensed milk produced by boiling cow milk , if in condensed milk 20% water…
2023
Condensed milk produced by boiling cow milk , if in condensed milk 20% water and in cow milk 90% is water then how much condensed milk could be produce by 72 lit of cow milk?
- A.
7
- B.
9
- C.
11
- D.
10.66
Attempted by 11 students.
Show answer & explanation
Correct answer: B
Key idea: the non-water (solids) portion is conserved when milk is condensed.
Step 1: Find solids in the original cow milk. Cow milk is 90% water, so solids = 10% of 72 = 7.2.
Step 2: Determine solids per liter in condensed milk. Condensed milk is 20% water, so solids = 80% = 0.8 L solids per 1 L condensed.
Step 3: Compute volume of condensed milk possible: volume = total solids / solids per liter = 7.2 ÷ 0.8 = 9 liters.
Answer: 9 liters of condensed milk can be produced.