QUIZ 11: M104 SP ‘12

1. Write the ratio as a fraction in lowest terms:
(a) 160 miles to 100 miles (b) $5.50 to $3.50

2.   Write each ratio as a ratio of whole numbers in lowest terms.
(a) 5 to 1  ¼ (Read “5 to one and one fourth”)
(b) 8 feet to 4 yards. Hint: 1 yard = 3 feet.

3. Write  ratio as a ratio of whole numbers in lowest terms. 3 pounds  to

6 ounces. Hint : You must convert either ounces to lbs or lbs to ounces.

Then divide.

Sec. 6.2

4. Find the best buy for the following item. Soup (same size cans):

2 cans for $1.90

3 cans for $2.89

5 cans for $4.58

5. Find the rate as a fraction to lowest terms: 44 bushels per 8 trees.

6. Find the rate as a fraction to lowest terms: 25 doctors for 310 patients.

Sec. 6.3

7.  Determine whether the proportion is true or false; You can either

write the ratios to lowest  terms or cross-multiply to prove your answer: Write ‘True’  or ‘False.’

100/120 = 75/100

8.   Use cross products to  determine whether the proportion is true or

false. Show cross products and write ‘True’  or ‘False.’

(a) 20/25 = 4/5  (b) 36/23 = 9/3.75

9.  Use cross products to  solve for the  unknown variable. Show cross

products and solve for x.

 (a) 5/x = 20/8   (b) 55/33 = 44/x

10.   Use cross products to  solve for the  unknown variable. Show cross

products and solve for x.

 (a) x/3.6 = 4.5/6  (b) 

Sec. 6.4

FOR THE LAST TWO PROBLEMS , YOU MAY USE CROSS-PRODUCTS

AS YOU DID  IN THE  PREVIOUS ONES.

11. If 5 ounces of a medicine must be mixed with 8 ounces of water, how many

ounces of medicine would be mixed with 20 ounces of water?  

12. Only 3 out of 100 people  like their eggs poached in national and

local surveys. At that rate how many of the 60 customers who ordered

eggs at  Joe’s Home Made Restaurant this morning asked to have

their eggs poached? Round to the nearest whole person.