Question

A strip of wood 78 inches long is to be cut into pieces 3 3/4 inches long. How many pieces can be cut?

A. 12
B. 26
C. 20
D. 21

Answer 1

it's basically 78 divides 3 3/4

Answer 2

Do I need to change 3 3/4 into a mixed fraction first?

Answer 3

Yes you should, it would be easier

Answer 4

I think I need help doing that. :/

Answer 5

I can't remember how.

Answer 6

Multiply the whole number by the denominator. Add the result to the numerator. The denominator remains the same

Answer 7

So 3 3/4, you multiply the 3 whole number to the bottom 4, which is 12, you add it to the top (3) you get 15 and you keep the denominator. So 15/4

Answer 8

15/4?

Answer 9

Yes

Answer 10

Now change 78 into fractions to look at it easier.

Answer 11

Set it up 78 (in fraction) divides for 15/4

Answer 12

Don't you just add a 1?

Answer 13

To 78? Yeah it's pretty much 78/1

Answer 14

Like 78/1?

Answer 15

Mhm :)

Answer 16

OK, cool.

Answer 17

Did you set it up?

Answer 18

Can you solve from here? Dividing fractions?

Answer 19

No, I think I got it! Thanks a lot (:

Answer 20

You're very welcome :)