Question

A person preparing a medicine wants to convert 15% alcohol solution into 32% alcohol solution. Find how much pure alcohol he should mix in 400 ml of 15%alcohol solution to obtain required solution​

Answer 1

Answer:

100ml

Step-by-step explanation:

Let the amount of pure alcohol he should mix in 400 ml of 15% alcohol = x  

 

15% of 400 + x = 32% of (400 + x)

→ (15/100) × 400 + x = (32/100) × (400 + x)

→  6000 + 100x  = 12800 + 32x

→  68x = 6800

→      x = 100 ml