Question

Sven buying 3 1/3 pounds of wood. The wood costs 1.60 per pound. How much did Sven pay?

Answer 1

$5.33

Explanation:

If there are 3 1/3 lbs of wood and it's $1.60 per lb, then:

Turn the mixed number into an improper fraction first:

3 1/3 = 3/3 + 3/3 + 3/3 + 1/3

= 10/3

Then, turn 1.60 into an improper fraction too:

1.6 = 1 6/10

= 1 3/5

= 5/5 + 3/5

= 8/5

Then—letting x represent the number of lbs:

8/5x = 8/5 × 10/3

= (8 × 10)/(5 × 3)

= 80/15

= 16/3

To put this in dollar/decimal form, simplify:

16 ÷ 3 = 5.3333333 . . .

≈ $5.33