CAT 2008 — DILR Question 23
Answer the following question based on the information given below.
Telecom operators get revenue from transfer of data and voice. Average revenue received from transfer of each unit of data is known as ARDT. In the diagram below, the revenue received from data transfer as percentage of total revenue received and the ARDT in US Dollars (USD) are given for various countries.

If the total revenue received is the same for the pairs of countries listed in the choices below, choose the pair that has approximately the same volume of data transfer.
Answer & solution
- A
Philippines and Austria
- B
Canada and Poland
- C
Germany and USA
UK and Spain
- E
Denmark and Mexico
From the given data we get that,
× Total revenue = ARDT × Volume
It is given that the total revenue received is the same for the pairs of countries in the choices.
∴ We need to consider the ratio (% of revenue from Data Transfer/ARDT) for the countries in the given choices
The countries for which this ratio is same would lie on a straight line drawn from the origin.
Consider the choices given. From observation one can see that the UK and Spain lie on a straight line drawn from the origin, whereas all other pairs are not on a straight line.
Hence, option (d).