DILR – Data Interpretation – The multi-layered pie-chart below
The following set contains four questions related to Logical Reasoning. Choose the best answer to each question.
The multi-layered pie-chart below shows the sales of LED television sets for a big retail electronics outlet during 2016 and 2017. The outer layer shows the monthly sales during this period, with each label showing the month followed by sales figure of that month. For some months, the sales figures are not given in the chart. The middle-layer shows quarter-wise aggregate sales figures (in some cases, aggregate quarter-wise sales numbers are not given next to the quarter). The innermost layer shows annual sales. It is known that the sales figures during the three months of the second quarter (April, May, June) of 2016 form an arithmetic progression, as do the three monthly sales figures in the fourth quarter (October, November, December) of that year.
Questions
Q 1. What is the percentage increase in sales in December 2017 as compared to the sales in December 2016?
a) 38.46
b) 22.22
c) 50.00
d) 28.57
Q 2. In which quarter of 2017 was the percentage increase in sales from the same quarter of 2016 the highest?
a) Q4
b) Q1
c) Q2
d) Q3
Q 3. During which quarter was the percentage decrease in sales from the previous quarter’s sales the highest?
a) Q2 of 2016
b) Q2 of 2017
c) Q4 of 2017
d) Q1 of 2017
Q 4. During which month was the percentage increase in sales from the previous month’s sales the highest?
a) October of 2017
b) October of 2016
c) March of 2016
d) March of 2017
Solutions:
The information given in pie –chart can be represented in table form as following :
Month/sales figure in
2016
2017
Q1
January
80
120
February
60
100
March
100
160
Q2
April
40
60
May
75
June
65
Q3
July
75
60
August
120
Â
September
55
70
Q4
October
100
150
November
Â
170
December
Â
Â
Now as given Sales figure in 2017 Q4 = 500
So sales figure in December 2017 = 500 – 150 – 170 = 180
Total sales in 2017 Q3 = 220
So sales in August 2017 = 220 – 60 – 70 = 90
Similarly sales in missing month of 2016 can be obtained as sales in the three months of 2016 Q4 & Q2 are in Arithmetic Progression. Thus following table can be obtained –
Month/year
2016
2017
Q1
January
80
240
120
380
February
60
100
March
100
160
April
40
150
60
200
Q2
May
50
75
June
60
65
Q3
July
75
250
60
220
August
120
90
September
55
70
Q4
October
100
300
150
500
November
120
170
December
140
180
Question 1) required percentage increase = (180 – 140)/140×100 =40/140×100=28.57%
Correct option d) 28.57 %
Question 2) it can be seen that the required percentage increase in sales is highest for Q4 and
this is = ((500-300))/300×100=66.66%
Correct option a) Q4
Question 3) From the table obtained , we can see there is decrease only in Q2 of both year
Decrease in Q2- 2016 = (240-150)/240×100=37.5%
Decrease in Q2- 2017 = (380-200)/380×100=47.37%
Correct option b) Q2 of 2017 Question 4) As given options are only for may and October and we can see that sales in October 2017 is more than double ( from 70 in November to 150 in October ) so it is highest than other given month .
Correct option a) October 2017
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