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1. Maruf's net income is always 80 percent of his gross income. What will be increase in Maruf's net income when his gross income increases from Tk. 20,000 to Tk. 30,000?
- A. 5,000
- B. 5,000
- C. 5,000
- D. 5,000
Answer: Option C
Explanation:
Net income from gross income of 20,000 tk = 80% of 20,000 = (0.8)(20,000)
Net income from gross income of 30,000 tk = 80% of 30,000 = (0.8)(30,000)
So, the INCREASE in net income = (0.8)(30,000) - (0.8)(20,000)
= (0.8)(30,000 - 20,000)
= (0.8)(10,000)
= 8,000 tk. Ans
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