SBI PO 2019 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
The following question based on SBI PO topic of previous year question answers
(a) Rs. 46000
(b) Rs. 36000
(c) Rs. 28000
(d) Rs. 23000
e) None of these
The correct answers to the above question in:
Answer: (d)
Ratio of the equivalent capitals of A, B and C for 1 month = 600 × 12 : 900 × 5 : 300 × 7 = 24 : 15 : 7
According to question 7 ≡ Rs. 3500 ⇒ 1 ≡ Rs. 500
The total profit at the end of year = 24 + 15 + 7 = 46 ≡ 46 × Rs. 500 = Rs. 23000
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Read more sbi po prelims 2019 Based Previous Year Questions and Answers
Question : 1
Cost price of A is twice the cost price of B. If the selling price of B is Rs.3600 and it is sold at the profit of 20%, then find the cost price of A.
a) Rs. 3000
b) Rs. 6000
c) Rs. 8000
d) Rs. 2000
e) Rs. 10000
Answer »Answer: (b)
Given, selling price of B = 1.20 × cost price of B
⇒ Cost price of B = 3600 ÷ 1.20 = Rs.3000
According to question,
Cost Price of A = 2 × Cost price of B
Hence, the cost price of A = 2 × Rs.3000 = Rs.6000.
Question : 2
Train A crosses a vertical pole at the speed of 15 m/s in 20 seconds. Speed of train A is 3 m/s less than the speed of train B and length of train B is 30 meter less than length of train A. Find the time taken by Train B to cross 270 meter long platform.
a) 20 seconds
b) 15 seconds
c) 30 seconds
d) 45 seconds
e) 40 seconds
Answer »Answer: (c)
Let the length of Train A be L meters, then
According to question,
$L/15$= 20
⇒ L = 300 m
∴ Length of train A is 300 m
So, length of train B = 300 – 30 m = 270 meters
Speed of train B = 15 + 3 = 18 m/s
When B crosses a 270 m long platform,
Time = $\text"270 + 270"/18$ seconds = 30 seconds
Hence, the required time = 30 seconds.
Question : 3
The ratio of speed of a boat in still water to speed of the current is 10 : 1. If ratio of the time taken by the boat to travel D km downstream to the time taken to travel (D – 45) km upstream is 3 : 2. Find the value of D.
a) 88
b) 54
c) 110
d) 99
e) 66
Answer »Answer: (d)
Let ratio of speed of a boat in still water to speed of the current is 10x : x,
then
$\text"D / ( 10+1 ) x" /\text "D - 45/ ( 10 - 1) x"$=$3/2$
⇒ 18D = 33D – 33 × 45
⇒ 15D = 33 × 45
⇒ D = 99
Directions:
Study the following pie-chart and table carefully to answer the questions that follow.
Percentage of visitors (male and female) in a museum on the given 3 days-Friday, Saturday and Sunday is depicted in the pie chart given below.
Total number of visitors on the given three days = 400 Ratio of male visitors to female visitors on the given three days is depicted in the table given below:
| Days | Male : Female |
| Friday | 2 : 3 |
| Saturday | 7 : 5 |
| Sunday | 5 : 4 |
Question : 4
The number of female visitors on Friday was what percentage of the number of female visitors on Sunday?
a) 70%
b) 85%
c) 80%
d) 65%
e) 75%
Answer »Answer: (e)
| Day | Male | Female | Total |
| Friday | 40 | 60 | 100 |
| Saturday | 70 | 50 | 120 |
| Sunday | 100 | 80 | 180 |
Required percentage = (60/80) × 100 = 75%.
Question : 5
What is the central angle corresponding to the number of visitors (male and female) on Sunday (in degrees)?
a) 172.8°
b) 165.6°
c) 162°
d) 154°
e) 198°
Answer »Answer: (c)
| Day | Male | Female | Total |
| Friday | 40 | 60 | 100 |
| Saturday | 70 | 50 | 120 |
| Sunday | 100 | 80 | 180 |
Required central angle = (45/100) × 360° = 162°.
Question : 6
Out of the total number of visitors on Saturday, 35% were adults. The cost for 1 adult’s ticket is double that for one child’s ticket. If the total amount collected from selling tickets on Saturday was Rs.8100. What is the cost of 1 adult’s ticket?
a) Rs. 200
b) Rs. 160
c) Rs. 120
d) Rs. 100
e) Rs. 50
Answer »Answer: (d)
| Day | Male | Female | Total |
| Friday | 40 | 60 | 100 |
| Saturday | 70 | 50 | 120 |
| Sunday | 100 | 80 | 180 |
Let cost of 1 adult’s ticket = Rs. 2x, then cost of 1 child’s ticket = Rs. x
According to question
(35% of 120)× 2x + (65% of 120) × x = 8100
⇒ 84x + 78x = 8100
⇒ x = 8100/162 = 50
Hence, cost of 1 adult’s ticket = Rs. 2x = 2× Rs. 50 = Rs.100.
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