Question

A 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

1 glass holds 1/6 of a bottle then 6 glasses hold 1 glass bottle water.

so, 1 bottle can give 6 glasses of water

then

3

(

1

2

)

or

7

2

bottle can give

6

⋅

7

2

glasses of water , that is 21 glasses.

Answer link

Answer 2

Let w = the glasses of water we need to find.

Change 3_1/2 to 7/2.

1/w = (1/6)/(7/2)

(1/6)w = (7/2)

Divide both sides by 1/6.

w = (7/2) ÷ (1/6)

w = (7/2) • (6/1)

w = (21/1)

w = 21