Question

A barista uses the following amounts of milk in three

cups of hot beverages: 57mL, 69mL and 53mL. If there
were 2L of milk to begin with, how much would be left?

Answer 1

1821 mL or 1.821 L

Explanation:

Converting L to mL :

Unit rate : 1 L = 1000 mL

⇒ 2L = 2000 mL

Now three amounts of 57 mL, 69 mL, and 53 mL are used. They need to be subtracted from the total.

⇒ Remaining = 2000 - [57 + 69 + 53]

⇒ Remaining = 2000 - 179

⇒ Remaining = 1821 mL or 1.821 L

Answer 2

Amount used in 3 cups

• 57+69+53
• 110+69
• 179mL

Began milk=2L

• 2(1000)
• 2000mL

Milk left

• 2000-179
• 1821mL