Subject: mathqa
Question: solution x is 10 percent alcohol by volume , and solution y is 30 percent alcohol by volume . how many milliliters of solution y must be added to 150 milliliters of solution x to create a solution that is 25 percent alcohol by volume ?
Option: 
A: 500 / 3
B: 250 / 3
C: 450
D: 400
Answer: C