Lesson: Applied Arithmetic - 07t05

Ratios, continued

[Page 7 of 36]

Use the classic ratio setup to answer the following questions. Type each answer into the Text Box provided, and then click Continue.

At a Halloween party, there are 30 guests, 16 of whom are Draculas and 14 of whom are Mummies.

1.	What is the ratio of Draculas to Mummies at the party? Answer: 8:7

2.	What is the ratio of Mummies to the total number of party guests? Answer: 7:15

3.	Assuming no Mummies leave, how many Draculas need to arrive to make the ratio of Draculas to guests 2:3? Answer: 12

	Look to the number that doesn't change, and use that with your new ratio. The number of Mummies remains the same at 14. You are told that you want , so you want 2 Draculas for every 1 Mummy, which means you want . Since , you want a total of 28 Draculas. There are presently 16 Draculas, so you want 12 more to arrive.

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