Question 2
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If the expenditures in 1996 and 1999 are equal, then the approximate ratio of the income in 1996 and 1999 respectively is?
- A 1 : 1
- B 2 : 3
- C 13 : 14
- D 9 : 10 Correct
- E Cannot be determined
Correct Answer: Option D
I1 = 155x / 100 -------- (i)
Let the expenditure in 1996 = x.
Also, let the incomes in 1996 and 1999 be I1 and I2 respectively.
Then, for the year 1996, we have:
| 55 = | I1 - x | x 100 | | 55 | = | I1 | - 1 | |||
| x | 100 | x |
I1 = 155x / 100 -------- (i)| 70 = | I2 - x | x 100 | | 70 | = | I2 | - 1 | |||
| x | 100 | x |
I2 = 170X / 100 ----- (ii)
From (i) and (ii), we get:
| I1 | = |
| = | 155 |  | 0.91 | 9 : 10. | |||||
| I2 |
| 170 | 1 |
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