2025 AMC 10B Problem 1

Question

The instructions on a

350

-gram bag of coffee beans say that proper brewing of a large mug of pour-over coffee requires

20

grams of coffee beans. What is the greatest number of properly brewed large mugs of coffee that can be made from the coffee beans in that bag?

16

17

18

19

20

Each mug uses

20

grams, so divide the total mass by

20

A partial mug does not count, so round

\frac{350}{20}

down to a whole number

Each mug needs

20

grams, so we divide:

\frac{350}{20} = 17.5.

A half mug isn’t a mug, so round down. That leaves

17.

Thus, B is the correct answer.

Problem 1 in other years