Discussion Forum

The ratio of expenditures of companies A and B in 2012 was 3: 4 respectively. What was the respective ratio of their incomes in 2012?

Answer:

Explanation:

For company A, in 2012

P% = $\frac{I-E}{E}\times100$

30 = $\frac{I-3}{3}\times100$

90 = 100I - 300

$\frac{390}{100}$ = I = 3.9

For company B, In 2012

P% = $\frac{I-E}{E}\times100$

40 = v

160 = 100I - 400

$\frac{560}{100}$ = I = 5.6

Then required ratio = $\frac{3.9}{5.6}$ = 39:56