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SAT Math Homework for Lesson #4 1. Before the market opens on Monday, a stock is priced at $25. If its price decreases $4 on
Monday, increases $6 on Tuesday, and then decreases $2 on Wednesday, what is the final
price of the stock on Wednesday?
(A) $12
(B) $21
(C) $25
(D) $29
(E) $37
2. If
1
1
of a number is 4 less than of the number, the number is
3
2
(A) 12
(B) 18
(C) 24
(D) 30
(E) 36
3. Greg’s weekly salary is $70 less than Joan’s, which is $50 more than Sue’s. If Sue earns
$280 per week, how much does Greg earn per week?
(A) $160
(B) $260
(C) $280
(D) $300
(E) $400
4. The sum of 𝑛 consecutive integers is 11. If the least of these integers is -10, what is the
value of 𝑛 ?
(A) 11
(B) 12
(C) 20
(D) 21
(E) 22
SAT Math Homework for Lesson #4 5. If 20% of 𝑝 is 10, then 10% of 𝑝 is?
(A) 2
(B) 4
(C) 5
(D) 8
(E) 14
6. 30% of 150 equals 4.5% of:
(A) 10
(B) 100
(C) 250
(D) 1000
(E) 10,000
7. How old is David if his age 6 years from now will be twice his age 7 years ago?
(A) 13
(B) 15
(C) 17
(D) 20
(E) 23
8. In an opinion poll of 50 men and 40 women, 70% of the men and 25% of the women
said that they preferred fiction to nonfiction books. What percent of the number of people
polled preferred to read fiction?
(A) 40%
(B) 45%
(C) 50%
(D) 60%
(E) 75%
SAT Math Homework for Lesson #4 9. In an ordered set of 4 consecutive odd integers, the sum of 3 times the second integer and
the greatest integer is 104. Which is the least integer in the set?
(A) 11
(B) 17
(C) 19
(D) 23
(E) 27
10. The regular price of software at a computer superstore is 12% off the retail price. During
an annual sale, the same software is 25% off the regular price. If the retail price is p,
which expression represents the sale price?
(A) 0.34p
(B) 0.37p
(C) 0.63p
(D) 0.64p
(E) 0.66p
11. A paint mixture contains yellow, blue, and red in a 3:2:1 ratio, respectively. If the
mixture contains 9 pints of yellow paint, what is the total number of pints in the mixture?
(A) 9
(B) 12
(C) 15
(D) 16
(E) 18
12. The volume of hydrogen in a balloon varies inversely with the applied pressure. At an
applied pressure of 200 Torr, the volume of hydrogen in the balloon is 3 cubic feet. What
is the applied pressure, in Torr, when the volume of hydrogen in the balloon is 40 cubic
feet?
(A) 0.6
(B) 13.3
(C) 15
SAT Math Homework for Lesson #4 (D) 163
(E) 237
13. If x varies directly as y2, and x=4 when y=3, then what is the value of x when y=12
(A) 8
(B) 16
(C) 36
(D) 48
(E) 64
14. 4, 7, 11, 13, n
For which of the following values of n is the median of the list of numbers shown above equal to
the average (arithmetic mean)?
(A) 7
(B) 11
(C) 13
(D) 14
(E) 20
15. If a + b + c = 15, what is the average (arithmetic mean) of a, b, c, 7, and 8?
SAT Math Homework for Lesson #4 16.
A = {3, -2, 5, ½, x, -4, 7, -6}
If the median of set A is 1/2 , then what is the value of x?
(A) 4
(B) 3/2
(C) ½
(D) 0
(E) -1/2
17. If the average (arithmetic mean) of x and y is 10, then the average of (x + 7) and (y + 17) is
(A) 11
(B) 12
(C) 20
(D) 22
(E) 26