## amber15 2 years ago a certain recipe asks for 8/9 cup of granola. how much is needed to make 7/9 of a recipe . To make 7/9 of a recipe ___ cup of granola is needed is my answer 4/5 can some one check see if it correct doing test

1. texaschic101

@agent0smith ...can you help. I don't know if I am even doing this correctly.....If it takes 8/9 for the entire recipe and you are making 7/9...would you just subtract 2/9 from 8/9 equaling 6/9 equaling 2/3 ? Or am I way off on how to do this problem ???

2. agent0smith

You need to multiply them.

3. texaschic101

multiply what ? 2/9 * 8/9 ? what needs to be multiplied ?

4. amber15

8/9 and the 7/9

5. texaschic101

oh.....I was way off.....thx for getting me on track

6. agent0smith

If you want to make twice the recipe, you'd have to double the 8/9 right? ie 2*8/9. If you want only 7/9 of the recipe, 7/9*8/9

7. texaschic101

I tried that earlier by setting the problem up as a proportion...I thought I was doing it wrong

8. amber15

56/91

9. amber15

opps 56/81

10. texaschic101

Thats the product when you multiply...so yes....56/81

11. amber15

12. texaschic101

I think so.....according to agent0smith....and this person knows math.

13. amber15

okay