Aptitude test - 36

[HELP]

*In a class composed of x girls and y boys what part of the class is composed of girls

A.y/(x + y)
B.x/xy
C.x/(x + y)
D.y/xy


*What
is the maximum number of half-pint bottles of cream that can be filled
with a 4-gallon can of cream(2 pt.=1 qt. and 4 qt.=1 gal)

A.16
B.24
C.30
D.64



*If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3

A.0
B.1
C.-1
D.4


*A
coffee shop blends 2 kinds of coffee,putting in 2 parts of a 33p. a gm.
grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of
the 33p. a gm. to 2 parts of the less expensive grade,how much will the
shop save in blending 100 gms.

A.Rs.90
B.Rs.1.00
C.Rs.3.00

D.Rs.8.00


*There
are 200 questions on a 3 hr examination.Among these questions are 50
mathematics problems.It is suggested that twice as much time be spent
on each maths problem as for each other question.How many minutes
should be spent on mathematics problems

A.36
B.72
C.60
D.100

[sowmya571]

hello



*In a class composed of x girls and y boys what part of the class is composed of girls

A.y/(x + y)
B.x/xy
C.x/(x + y)
D.y/xy

[sowmya571]

hello



What
is the maximum number of half-pint bottles of cream that can be filled
with a 4-gallon can of cream(2 pt.=1 qt. and 4 qt.=1 gal)

A.16
B.24
C.30
D.64

Ans.D

[sowmya571]

hello



*If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3

A.0
B.1
C.-1
D.4


4+a=2a+3



a=1

[sowmya571]

hello



*A
coffee shop blends 2 kinds of coffee,putting in 2 parts of a 33p. a gm.
grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of
the 33p. a gm. to 2 parts of the less expensive grade,how much will the
shop save in blending 100 gms.

A.Rs.90
B.Rs.1.00
C.Rs.3.00
D.Rs.8.00


Ans.C

[sowmya571]

hello



*There
are 200 questions on a 3 hr examination.Among these questions are 50
mathematics problems.It is suggested that twice as much time be spent
on each maths problem as for each other question.How many minutes
should be spent on mathematics problems

A.36
B.72
C.60
D.100

[nisar]

Ans for ques 3 is 1.


x^y=2x+y,that means we can write 2^a=a^3 as


4+a=2a+3;


so a=1.

[nisar]

Ans for qus 1 is


x/x+y

[nisar]

*There are 200 questions on a 3 hr examination.Among these questions are 50 mathematics problems.It is suggested that twice as much time be spent on each maths problem as for each other question.How many minutes should be spent on mathematics problems

A.36
B.72
C.60
D.100



Ans is 72.


sol: 150+50=180 minute


so 150x+50*2*x=180 minute


ie,250x=180


so we will get x=18/25


time taken to solve mathematics questions=50*2*18/25(72)

[Narotham]

*If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3
Sol:-


2^a = 4 + a


a^3 = 2a + 3


4 + a = 2a + 3


a = 1


A.0
B.1
C.-1
D.4



"Always put your Head and Heart in one direction and Never look at your Feet"

[Narotham]

*In a class composed of x girls and y boys what part of the class is composed of girls

A.y/(x + y)
B.x/xy
C.x/(x + y)
D.y/xy




"Always put your Head and Heart in one direction and Never look at your Feet"

[Narotham]

*There are 200 questions on a 3 hr examination.Among these questions are 50 mathematics problems.It is suggested that twice as much time be spent on each maths problem as for each other question.How many minutes should be spent on mathematics problems



A.36
B.72
C.60
D.100


Sol:-


time taken for solving other questions = 150x


time taken for solving mathematics questions = 2 X 50x


total time taken


150x + 100x = 180 min (3 Hrs)


x = 18/25


time taken for solving mathematics questions = 2 X 50x


= 2 X 50 X 18/25


= 72


"Always put your Head and Heart in one direction and Never look at your Feet"

[chayanika]

1.c) x/(x+y)

[satyadev]

1, No of Girls/ Total No Students=x/(x+y)&n bsp; option C

2, 2pt=1qt
4qt = 1gal;
4(2pt)=8pt=1gal;
1pt=1/8 gal;
1/2 pt = 1/16 gal;
multiplying 64 on both sides
64(1/2 pt)= 64(1/16) gal= 4 gal
Ans is 64&nbs p;&nbs p;&nbs p;&nbs p;&nbs p; option D

3, x^y=2x+y
2^a=a^3
4+a=2a+3; a=1&nb sp;&nb sp;&nb sp; Option B


4, I cant Get answer Correctly

5, total=200 quest
50 maths, 150 others
2t(50)+t(150)=180 minutes
250t=180; t=18/25
For Solving maths problems 2t(50)=2*18/25*50=72min
for other problems 150*18/25=108min&n bsp;&n bsp; Option B

[chayanika]

2.d)64


1 gal=4 qt=8 pt


so, 4 gal=32 pt


no of bottles=32*2=64