Question

Carlos is buying water. He needs 4 liters. A half-liter of water costs 2.59. A 200-milliliter container of water costs $0.92. What should carlos buy so he gets 4 liters at the lowest price? Explain.

Answer 1

1 liter has 1000 ml

0.5 l = 2.59

500 ml = 2.59

_____

200 ml = 0.92

100 ml = 0.46

500 ml = 2.3

second deal is better by 29 cents