Question

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*I want only correct answer*

Sangeeta invests Rs. 16500 partly in 10%, Rs. 100 shares at Rs. 130 and partly in 8%, Rs. 100 shares at Rs. 120. If her total annual income from these shares be Rs. 1180, find her investment in each kind of shares.

Answer 1

Let Rs A has been deposited on share value of Rs 130, and 
Rs ( 16500 - A ) on share value of Rs 120. 

Then the annual income 
= A/130 X 100/100 X 10 + ( 16500 - A )/120 X 100/100 X 8 
= A / 13 + 16500 / 150 - A / 15 
= A / 13 - A / 15 + 1100 = 1180 { GIVEN ) 
L.C.M.= 13 X 15 

15 A - 13 A = 80 X 13 X 15 
2 A = 80 X 13 X 15 
A = 40 X 13 X 15 
= 7800 Rs 

and on the other share = 8700 Rs 
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