The ratio of orange juice to pineapple juice in Tropical Treat punch is 4to 3. Bill has 64 oz of orange juice. How much pineapple juice does he need?

Question

I do not understand how to get the answer to this question

Answer 1

You first need to write the ratio as a fraction. The OJ is 4 and the pineapple is 3, so this ratio will be 4/3. Then for the second part of the problem, you need to solve for the pineapple juice which is x. So your ratio is 64/x. Then your equation will look like this:

 

4/3=64/x    Then you need to cross multiply. 4*x=64*3. This gives you 4x=192. Then you need to divide both sides by 4. 192/4=48. Therefore, x=48 oz, so your answer is 48 oz of pineapple juice.