b. John earned 0 one week and spent 0. What is the ratio of the
amount John saved to the amount John spent?
_______________
c. The ratio of a father's age to his son's age is 9:2. If the son's age is 12
years, what is the age of the father (in years)?
________________
d. If three shirts cost , what is the cost of a dozen shirts at the same rate?
_________________
e. A gallon of paint covers 240 square feet of surface. If a living room contains
906 square feet of paintable surface and a kitchen contains 334 square feet of surface,
what is the number of gallons of paint needed for the living room and kitchen?
_________________
1-57. ANSWERS TO PRACTICE 1-11
a. 4:3 = 32:W
4W = 3 x 32
4W = 96
W = 24
b. 30:120 = 1:4
c.
2:9 = 12:x
2X = 9 x 12
2X = 108
X = 54
d. 3:23 = 12:X
3X = 23 x 12
3X = 276
X = 92
MD0904
1-46