Question

Instructions:Select the correct answer from the drop-down menu. Dave is helping his grandmother make trail mix. His grandmother asks him to add 1/5 cup of fruit for every 1/3 cup of nuts. To satisfy his grandmother’s request, Dave must mix how many cups of fruit for a single cup of nuts.

Answer 1

Set up a proportional relationship:

xf/1n=(f/5)/(n/3)

xf/1n=3f/(5n) multiply both sides by 1n

xf=3f/5 so

x=3/5

Dave must mix in 3/5 of a cup of fruit with a single cup of nuts.

You could of also just noted that you need to multiply 1/5 times 3 because 1/5 mixes with just 1/3 of a cup of nuts...