@gmat_group
@AlijonovSirojiddin
11.
Three grades of milk are 1 percent, 2 percent, and 3 percent by
volume. If x gallons of 1 percent grade, y gallons of 2 percent
grade, z gallons of 3 percent grade are mixed to give x+y+z
gallons of a 1.5 percent grade, what is x in terms of y and z?
A) x=y+z
B)
2
y
z
x
+
=
C) x=2y+3z
D) x=y+2z
E) x=y+3z
@gmat_group
@AlijonovSirojiddin
12.
Whenever Martin has a restaurant bill with an amount between
$10 and $99, he calculates the dollar amount of the tip as 2 times
the tens digit of the amount of his bill. If the amount of Martin'
most recent restaurant bill was between $10 and $99, was the tip
calculated by Martin on this bill greater than 15 percent of the
amount of the bill?
(1) The amount of the bill was between $15 and $30
(2) The tip calculated by Martin was $8
@gmat_group
@AlijonovSirojiddin
13.
Jack and Mark both received hourly wage increases of 6 percent.
After the increases, Jack' hourly wage was how many dollars per
hour more than Mark's?
(1) Before the wage increases, Jack's hourly wage is $5 per hour
more than Mark's
(2) Before the wage increases, the ratio of the Jack's hourly wage
to Mark's hourly wage is 4 to 3
@gmat_group
@AlijonovSirojiddin
14.
A manufacture produced x percent more video cameras in 1994
than in 1993 and y percent more video cameras in 1995 than in
1994. If the manufacturer produced 1,000 video cameras in 1993,
how many video cameras did the manufacturer produce in 1995?
(1) xy=20
(2) x+y+xy/100 = 9.2
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