Edexcel A-Level Economics A2 3.3.3 2b Significance of Concentration Ratios Topic Practice

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Question 1

[Maximum number: 1]

The table shows the market share by value of retail sales of grocery stores in the UK. From the data it can be deduced that

StoreMarch 2016 (\%)March 2017 (\%)
Tesco28.127.6
Sainsbury’s16.416.1
Asda16.215.7
Morrisons10.510.4
Co-op6.16.1
Aldi6.06.8
Others16.717.3
A

the 3-firm concentration ratio was 50.7% in March 2016

B

the 5-firm concentration ratio was 87.3% in March 2016

C

the 3-firm concentration ratio was 49.4% in March 2017

D

the 5-firm concentration ratio was 76.6% in March 2017

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