Chart 2: Composite Chart
This question is a combination of line charts and a bar diagram. The student has to collate information both from the line charts and the bar charts to solve the questions.
1. What is the average rate of contribution of exports to sales during the period 1994-95 to 1998-99 as a percentage?
1. 30.1 2. 27 3. 2.7 4. 138
2. If the sales for the year 1999-2000 exceed that of 1998-99 by 50% and the profits increase proportionately, what would be the increase in return on investment'! (Assume investment to remain unchanged.)
1. 5% 2. 25% 3. 50% 4. Cannot be determined
How to Solve:
1. 2 In this type of question where two or three charts are given, one has to see from which chart the required information will be obtained.
Total sales is obtained by the first line graph = (20+25+33+47+60) x 100 = 18500 mn.
Total exports is obtained by the second chart = (40+60+95+140+225) x 10 = 5600 mn.
Required percentage = 5600/18500 = 27% approx.
2. 3 This sum does not require any data. A little common sense solves this question.
If both revenues and profits increase by the same percentage, the proportional increase in profit will also be 50%, as investment is also same.
This sum illustrates the importance of keeping cool. It looks difficult, with three charts and only two questions. A student may be tempted to leave the questions, fearing large calculations. But sometimes sums are deceptive, as this set shows. If a student keeps cool, he will be able to spot the deceptive sets and solve them without spending too much time on them.