1.	Determine whether the ratios and form a proportion. Justify your answer.
		A.	No, their cross products are not equal.	B.	Yes, they are both percents.
		C.	No, they are unit rates.	D.	Yes, their cross products are equal.
		Hint
	2.	In a recipe, 3 cups of fruit serves 5 people. How many cups of fruit would serve 100 people?
		A.	80 cups	B.	70 cups
		C.	90 cups	D.	60 cups
		Hint
	3.	Tell which proportion could be used to solve the problem. If a 20-minute long-distance call costs $2.75, how much does a similar 8-minute call cost?
		A.	Both are correct	B.
		C.	Neither are correct	D.
		Hint
	4.	The average human heart beats 72 times in 60 seconds. How many times does it beat in 45 seconds?
		A.	96 times	B.	84 times
		C.	30 times	D.	54 times
		Hint
	5.	Solve .
		A.	d = 260	B.	d = 208
		C.	d = 198	D.	d = 226
		Hint