Question

Anyone know how to do this?

Answer 1

150 would be the answer because you know that the ratio for Milliliters to Liters is a 1 to 0.001 ratio.  So knowing that you can do 

250 x 6 = 1500

1500 x 0.001 = 150

Answer 2

6 multiplied by 250 is 1500. so that's 1,500 milliliters. There is 1000 milliliters in a liter which means Kyong bought 1.5 liters of stain. So the Answer is A.