There are 5 parts red paint for every 8 parts yellow paint. What is this ratio expressed as a fraction?
You want to find how many parts red paint James should use if he uses 1 part yellow paint. What do you divide 8 by to get 1?
Divide by 8.
What should you divide 5 by to find how many parts red paint James needs to use for 1 part yellow paint?
Divide by 8.
So, how many parts red paint should he use for 1 part yellow paint?
You also want to find how many parts yellow paint James should use if he uses 1 part red paint. How can you find this? How many parts yellow paint should he use?
Divide 8 by 5; he should use
Finally, you want to find how many parts yellow paint James should use if he uses 10 parts red paint. How could you find this?
Multiply 10 by the number of parts yellow paint needed for 1 part red paint
So, how many parts yellow paint should James use for 10 parts red paint?
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