Question

A full glass of water can hold 1/6 of a bottle.

How many glasses of water can be filled with 3 1/2. bottles of water?

Answer 1

21 glasses

Explanation:

let 'g' = glasses of water

create a proportion, glasses over bottles equals glasses over bottles

1 = g

1/6 7/2

cross-multiply: 1/6g = 7/2

cross-multiply: 2g = 42

g = 21

Answer 2

21 glasses

Explanation:

6 glasses in a bottle

3 x 6 = 18

3 glasses in half a bottle

18 + 3 = 21