Answer: She will use 6 cans of pinto beans .
She will use 6 cans of kidney beans.
Explanation:
As per given,
For bean salad : lima beans : pinto beans : kidney beans
= 3:2:2
Let quantity of lima beans = 3x, pinto beans 2x , kidney beans 2x.
if she use 9 cans of lima beans, then
3x=9
⇒x=9
Now, 2x= 2 x 3 =6
Thus , she will use 6 cans of pinto beans and 6 cans of kidney beans.