Question

3 cups 6 oz + 2 cups 9 oz

Answer 1

To answer this problem, the following formula is needed:

1cup=8oz

Now that we know how to convert from cups to ounces, lets convert 3cups 6oz, and 2cups 9oz to only ounces.

3cup+6oz= (3*8)+6=24+6=30oz

2cups+9oz=(2*8)+9=16+9=25oz

Now we can add the numbers together

3cup6oz+2cup9oz=
30oz+25oz=
55oz

We can also convert it back to mixed form if you need it....

55oz/8=6 remainder 7 or 6cups 7oz


Super simple way:

add the cups

3+2=5cups

add the ounces

6+9=15oz

so we have

5 cups 15 oz

since we know 1cup=8oz, we can convert 15oz to cups and ounces

15oz=8oz+7oz=1cup+7oz=1cup 7 oz

then add 1cup 1oz to 5cups

Answer=5cups+1cup 7oz=6cups 7oz

Answer 2

A cup equals 8 ounces. 
3 x 8 + 6  + 2 x 8 + 9
24 + 6 +16 + 9
=55 ounces. I hope this helped