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Data Interpretation
Direction (01-05): Study the following information carefully and answer the given questions:
The given pie chart shows the percentage of students enrolled in different activities in the school.
The given table shows the ratio of the number of boys to girls enrolled in these activities.
1) Quantity I:Â Number of girls in the school.
Quantity II:Â Number of boys in the school.
A) Quantity I > Quantity II
B) Quantity I ≥ Quantity II
C) Quantity II > Quantity I
D) Quantity II ≥ Quantity I
E) Quantity I = Quantity II or Relation cannot be established
2) The boys enrolled in singing and drama is approximately what percent of the number of girls enrolled in Dance and drawing?
A) 123%
B) 138%
C) 113%
D) 103%
E) None of these
3) What is the ratio of the number of girls enrolled in Swimming and Drama together to the number of boys enrolled in Dance and Drawing together?
A) 32:57
B) 34:55
C) 31:51
D) 37:57
E) None of these
4) What is the percentage of girls in the school?
A) 45%
B) 55%
C) 48%
D) 52%
E) None of these
5) The number of girls enrolled in Dance, Drawing and Singing together is approximately what percent of the number of boys in the school?
A) 61%
B) 59%
C) 67%
D) 73%
E) None of these
Application Sums
6) The ratio of the speed of train A and train B is 3:2. Train A crosses the platform of equal length in 54 seconds and train B crosses the pole in 18 seconds. Length of train A is what percent more than that of the length of train B?
A) 110%
B) 125%
C) 130%
D) Cannot be determine
E) None of these
7) Rahul invested certain amount in scheme A which offers simple interest and the amount becomes three-two of itself after 10 years. He also invested Rs.12000 in scheme B which offers compound interest and got Rs.1996.8 after 2 years. What is the difference between the rate of interest in scheme A and the rate of interest in scheme B?
A) 3%
B) 4%
C) 5%
D) 2%
E) None of these
8) The ratio of the speed of stream to speed of the boat in still water is 2:7. If the boat travels against the current at 20kmph, then how much time does it takes to travel 36km downstream?
A) 2 hours
B) 1 hours
C) 54 minutes
D) 48 minutes
E) None of these
9) The average weight of the students in the class is 32kg. 5 new students whose average weight is 28kg joined the class and then average weight of the class becomes 30kg. Find the total number of students in the class?
A) 10
B) 20
C) 15
D) 8
E) None of these
10) The ratio of the ages of A and B is 3:2 and the ratio of ages of B and C after 4 years is 1:2. The present age of A is 60% of the present age of C. Find the present age of B?
A) 12 years
B) 16 years
C) 20 years
D) 8 years
E) None of these
Answers :
Directions (01 – 05):
Swimming:
Girls = (3/8) * (16/100) * 1200 = 72
Boys = (5/8) *(16/100) * 1200=120
Dance:
Girls = (8/15) * (25/100) * 1200 = 160
Boys =(7/15) * (25/100) * 1200 = 140
Singing:
Girls = (3/5) * (20/100) * 1200 = 144
Boys = (2/5) * (20/100) * 1200= 96
Drawing:
Girls = (5/9) * (15/100) * 1200=100
Boys = (4/9) * (15/100) * 1200 = 80
Drama:
Girls = (2/9) * (24/100) * 1200 = 64
Boys = (7/9) * (24/100) * 1200 = 224
1) Answer: C
From quantity I,
Number of girls = 72+160+144+100+64=540
From quantity II,
Number of boys = 120+140+96+80+224=660
So, Quantity II > Quantity I
2) Answer: A
Boys enrolled in singing and drama = 96+224=320
Girls enrolled in Dance and drawing = 100+160=260
Required percentage =(320/260) * 100 = 123%
3) Answer: B
Required ratio = (72+64) : (140+80)
=136:220 = 34:55
4) Answer: A
Number of girls = 72+160+144+100+64=540
Required percentage = (540/1200) * 100 = 45%
5) Answer: A
Number of boys = 120+140+96+80+224 = 660
Required percentage = ((160+100+144)/660) * 100 = 61%
Directions (6-10) :
6) Answer: B
Let ,
Length of train A=x
Length of train B=y
The speed of train A and train B = 3S : 2S
Distance = speed * time
2x = 3S * (5/18) * 54
x = 45S/2
y = 2S *(5/18) * 18
y= 10S
Required percentage =((45S/2-10S) / 10S)*100
= (25S / 20S) * 100=125%
7) Answer: A
Scheme A
Consider the principle as P and rate of interest as R,
(3/2) P – P = P*10*R/100
P/2 = PR/10
R=5%
Scheme B
1996.8=12000 * (1+R/100)2Â – 12000
13996.8= (6/5) * (100+R)2
108 = (100+R)
R = 8%
Required Difference = 8-5=3%
8) Answer: B
Speed of the boat in still water:Â speed of stream= 2 : 7
Upstream speed = speed of the boat in still water – speed of stream = 20kmph
⇒ 5x = 20kmph
⇒ x = 4 kmph
Speed of stream= 8kmph
Speed of the boat in still water=28 kmph
Downstream speed= speed of the boat in still water + speed of stream
⇒ 28+8=36kmph
Required time = 36/36 =1 hours
9) Answer: A
Ratio of old students to new student = 2 : 2 = 1 : 1
Total number of students = (5/1) * 2=10
10) Answer: D
The ratio of the ages of A and B = 3:2
A= (60/100) * C
A= (3/5) * C
((3/5) * C) / B = 3/2
C/B = 5/2
(5x+4) / (2x+4) = 2/1
5x+4 = 4x+8
x= 4
B’s present age = 2(4)= 8 years
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