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Jaydeep invests a certain sum in 6% stock at 75, twice the sum in 7% stock at 80 and thrice the sum in 10% stock at 90. What is the average yield percent that Jaydeep gets on his investmen?

A.	8.54%	B.	8.8%
C.	9.45%	D.	9.8%

Answer and Explanation

Answer:9.8%

Explanation:
Suppose, Jaydeep invests Rs. 100 in 6% stock at 75, Rs. 200 in 7%
=> Stock at 80 and Rs. 300 in 10% stock at 90. The yield from these three investments is, respectively, Rs. 8, Rs. 17.5 and Rs. 33.33
Jaydeep’s total investment of Rs. 600 earns him a total of Rs. 58.83. therefore the average yield on his investment is 9.8%.

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