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Andrei [34K]
3 years ago
10

A chemist needs a 20% solution of alcohol. How many liters of 15% solution should be added to 4 liters of 40% solution to get a

20% solution?
Mathematics
1 answer:
lyudmila [28]3 years ago
6 0

Answer:

16

Step-by-step explanation:

Let's call the liters x. We can write 0.15x + 0.4 * 4 = 0.2 (x + 4). When we solve for x we get x = 16 liters.

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