652 McGRAW-HILL’S SAT
3 3 333 3
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- When mis subtracted from n,the result is r.
Which of the following expresses the result
when 2mis added to s?
(A) s+ 2 n− 2 r
(B) s+ 2 n+ 2 r
(C) 2s+ 2 n− 2 r
(D) 2s+ 2 n+ 2 r
(E) s− 2 n+ 2 r
Note:Figure not drawn to scale.- In the figure above, the slope of line lis
and the area of the triangle is 48 square units.
What is the value of x+y?
(A) 13
(B) 14
(C) 19
(D) 22
(E) 96- Ellen takes a trip that is ymiles long in total,
where y> 20. She travels the first 15 miles at
an average speed of 30 miles per hour and the
rest of the trip at an average speed of 40 miles
per hour. Which of the following represents
the total time of the trip, in hours?
(A)
(B)
(C)
(D) 2 +40(y−15)(E)^1
2+− (^40) ()y 15
1
2
+− 40 y 152
15
40
+
y−1
2
15
40
+
y−3
5
O
(10,y)(x, 0)
xy- If yvaries directly as mand inversely as the
square of n,and if y=8 when m=16 and
n=1, then what is the value of ywhen m= 8
and n=4?
(A) 0.125
(B) 0.25
(C) 0.5
(D) 1
(E) 2 - If a+b=sand a−b=t,then which of the fol-
lowing expresses the value of abin terms of s
and t?
(A) st
(B)
(C)
(D)
(E)
- If y=m^4 =n^3 and yis greater than 1, then
mn=
(A) y1/12
(B) y1/7
(C) y7/12
(D) y^7
(E) y^12()st^22
2−
()st^22
4−
()st+
2()st−
2