Mathematics
NULL
Medium
Question
Rs.9800 is invested partly in 9% stock at 75 and 10% stock at 80 to get equal incomes. How much is invested in the 9% stock?
A
Rs. 4800
B
Rs. 5400
C
Rs. 5000
✓ Official correct answer
D
Rs. 5600
Community credibility
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A
Rs. 4800
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B
Rs. 5400
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C
Rs. 5000
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D
Rs. 5600
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Explanation
Equal income ⇒ 9x/75 = 10(9800−x)/80. Solving gives x = Rs.5000.