## AMCAT PREVIOUS PLACEMENT PAPER QUESTIONS-6

231.in the family,parents and son age proportion 4:7:9. And 56 is sum of their age.if A”s age  is eight years .so find their present age?
A)100
B)202
C)301
D)40
Explanation:let their age 4x ,7x,and 9x
(4x-8)-(7x-8)+(9x-8)=56
20x=80
X=40

232.Diffrence between the two workers  is 10 years elder one was twice as old as the younger one 15 years ago.Find the present age of elder one.
A)11
B)25
C)33
D)22
Explanation:let x years and x+10 years
(x+10)-15=2(x-15)
x-5=2x-30
x=25

233.three Friends age ratio is 4:7:9.in 8 years ago their was 56 so find the average age of three friends.
A)50
B)40
C)45
D)65
Explanation:let three friends  age ratio 4x ,7x,and 9x
(4x-8)-(7x-8)+(9x-8)=56
20x=80=40

234.husband and wife age ratio is 1:2.and 1:3 ration was 5 years back.now what will be ratio after 5 years.
A)50
B)40
C)45
D)wrong
Explanation(x-5)/(2x-5)=1/3
X=10
15:35=3:5

235.present age of A and B 24yr and 36yr respectively.what was the ration between the two person 8 years ago.
A)7:4
B)4:7
C)5:6
D)10:1
Explanation: (36-8)/(24-8)=28/16=7:4
236.   4:5 is ratio of sudhir and Chandra. 4yr hence becomes 14:17find Chandra age?
A)33
B)45
C)30
D)63
Explanation:let  x
4x+4/5x+4=14/17
68x+68=70x+56
X=6
chandra=5*6=30

237.the present of  Adhir and Bhargab 36 and 50yr.if after n years ratio of their age will be 3:4.find the value of n.
A)6
B)21
C)33
D)22
Explanation: (36+n) / (50+n)=3/4
144+4n=150+3n
N=6

238.A school teacher man after 15 years 4 times of that man 15 years before.find his age?
A)16
B)25
C)20
D)21
Explanation:
Now age =x years
X+15=4(x-15)
X+15=4x-60
3x=75=25

239 now Bijoy is 1.5 times of reba”s age.the respective ratio between Akash and priya age will be 25:18 ,hence 8year then what is the priya”s age
A)28
B)10
C)69
D)26
Explanation: let reba age =xyr
Age of Bijoy=1.5x year
1.5x+8/x+8=25/18
27x+144=25x+200
X=56/2=28

240. In village the five Friends is 24.if their present age of the younger friends is 8yr ,what was average age of five friends at time of birth of the youngest friends.
A)10
B)20
C)50
D)65
Explanation: 24*5=120
Four friends=120-8*5=80/4
=20

Profit & Loss

241.A person buys a doll Rs.50 and sell it for Rs. 75.what will be gain percentage.
A)15
B)30
C)50%
D)56
Explanation:sp-cp
75-50=25 now (25/50)*100=50%

242.A person buys a cycle for Rs. 450but for daughter marriage he sell it Rs.350.Find his loss percentage?
A)1//2
B)2/4
C)22(2/9)
D)65/95
Explanation:cp-sp|450-350=100
100*(100/450)=200/9

243.A fruit sellerselling fruit  when cp is Rs.80 and gain is Rs.20% ,find Sp
A)96
B)56
C)63
D)76
Explanation:cp=80 and  gain 20%
Sp=((100+20)/100)*80
(120/100)*80=96

244.A seller Find Cp when Sp is Rs.80 and loss 20%
A)69
B)64
C)50
D)64
Explanation:
Sp=((100-20)/100)*80=8*8=64

245.A watch seller selling a watch Rs 1440 and loss 10%.at what price should be sell it to gain 10%
A)10
B)20
C)50
D)65
Explanation:1440(100/90)=1600
Now cp=1600 and gain =10%
Sp=1600*(110/100)=1760

246.A school teacher bought table for Rs.1500 and sold at loss of 6%.now find his selling price.
A)1410
B)1520
C)1369
D)4785
Explanation:1500*(94/100)=1410

247.A toy is bought for Rs.150 and sold a gain of 8%.now find the selling price.
A)10
B)120
C)530
D)165
Explanation: sp=(100+gain%)100*cp
150*(108/100)=54*3=162

248.Find Cp when Sp is 200 and loss is 35%
A)101.20
B)206.8
C)307.6
D)3054
Explanation:cp=sp*(100/100-Loss%)
Cp=100(100-45)*200 of sp=200*(100/65)=307.6

249.Find Cp when Sp is Rs40 and gain is 15%.
A)35.45
B)20.36
C)34.78
D)65.98
Explanation:40*(100/115)=34.78
250.A news paper seller buys news paper Rs27.50 and sell it 28.60.Find his Gain percentage.
A)1
B)4
C)5
D)7
Explanation: (28.60-27.50)=1.10
Gain%=(100*(1.10*27.50))=4%
251.A man purchase laptop Rs450 and sold Rs465.50.Find the loss percentage
A)10
B)20
C)50
D)65
Explanation:Loss%=((24.50/490)*100)%=5%
252.Find Sp when Cp RSs.56.25 Gain=20%.
A)20
B)67.50
C)56.96
D)96.30
Explanation:((120/100)*56.25)=67.50

253.Find Sp when Cp=Rs.80.40 loss 5%
A)10
B)34.34
C)68.34
D)73.10
Explanation:((85/100)*80.40)=68.34

254.A book seller sold a book Rs27.50 with profit of 10%.if it were sold Rs.25.75,then what would  the percentage of profit and loss?
A)10
B)20
C)50
D)65
Explanation:sp=27.50 profit=10%
Cp=((100/100)*27.50)=25
Now sp=25.75 profit (25.75-25)=0.75
Prifit%=(075/25)*100=3%
255.A fruit seller Find Cp when Sp  Rs40.60 Gain=16%
A)11
B)28
C)58
D)35
Explanation:Cp=((100/116)*40.60)=35
256. A fruit seller Find Cp when Sp  Rs40.60 Gain=16%
A)11
B)28
C)58
D)35
Explanation:Cp=((100/88)*51.70)=58.75
257.one electronic showroom Cp  21mobile is equal to Sp of 18 mobile.now Find the Gain% or loss%.?
A)11
B)28
C)5(8/3)
D)16(2/3)
Explanation:let Cp =1
Cp 18 mobile=Rs 18 sp of 18 mobile=21
Gain%=(3/18)100=16(2/3)%

258.A man bought water bottle at 3 for a rupee .how many for a rupee must be sell to Gain 50%.
A)2
B)8
C)5
D)9
Explanation:Cp of 3 bottle =Rs.1,Sp of 3 bottle=150% of Rs.1=3/2
For 3/2, bottle sold =3 for Rs.,bottle sold=(3*(2/3))=2

259.A Fruit seller purchased 70kg of mango for Rs.420 and sold the whole lot at the rate of Rs.6.50per kg.what will be Gain percentage.
A)25/4
B)25/9
C)9/36
D)25/3