CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 285
- If xis the product of .03 and .2, then xis equiv-
alent to the ratio of 6 to what number?
6. If 3,600 baseball caps are distributed to 4 stores
in the ratio of 1:2:3:4, what is the maximum num-
ber of caps that any one store receives?
(A) 360 (B) 720 (C) 1,080
(D) 1,440 (E) 14,400
7. David’s motorcycle uses of a gallon of gaso-
line to travel 8 miles. At this rate, how many
miles will it travel on 5 gallons of gasoline?
2
5
SAT Practice 4: Ratios and Proportions
....1 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 96- Jar A contains six red marbles and no green
marbles. Jar B contains two red marbles and
four green marbles. How many green marbles
must be moved from Jar B to Jar A so that the
ratio of green marbles to red marbles is the
same for both jars?
(A) 0 (B) 1 (C) 2 (D) 3 (E) 4 - 90 students are at a meeting. The ratio of girls
to boys at the meeting is 2 to 3. How many
girls are at the meeting?
(A) 30 (B) 36 (C) 40
(D) 54 (E) 60 - If , then 5x+ 1 =
(A) 3y+ 1 (B) 3y+ 2 (C) 3y+ 3
(D) 3y+ 4 (E) 3y+ 5- On a map that is drawn to scale, two towns
that are xmiles apart are represented as being
4 inches apart. If two other towns are
x +2 miles apart, how many inches apart
would they be on the same map?
(A) 4(x+ 2) (B) 6 (C)(D) (E)
6
x42 x
x()+
4
2
x
x+x
y+=
1
3
5
....1 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 9610 2 3 4 5 7 8 96- On a blueprint that is drawn to scale, the draw-
ing of a rectangular patio has dimensions 5 cm
by 7.5 cm. If the longer side of the actual patio
measures 21 feet, what is the area, in square
feet, of the actual patio?
(A) 157.5
(B) 294.0
(C) 356.5
(D) 441.0
(E) 640.5 - To make a certain purple dye, red dye and blue
dye are mixed in a ratio of 3:4. To make a cer-
tain orange dye, red dye and yellow dye are
mixed in a ratio of 3:2. If equal amounts of the
purple and orange dye are mixed, what frac-
tion of the new mixture is red dye?
(A) (B) (C)