A,B,and C start a business by investing 70000 that earns them a profit of 42000 at the end of the year. A invests his share in the profit in a scheme that gives her 10%interest compounded annually and B invests his share in a scheme that gives her 20%interest compounded annually. A gets an interest of 4200 at the end of the one year. find c's investment in the business?
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Answered by
0
Answer:
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Step-by-step explanation:
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Answered by
1
Answer:
15000
Step-by-step explanation:
Let x be A's profit and B's profit be y. Then,
x+2520=x(1+10/100)²
=> x+2520= x x 121/100
10x+252000=121x=>121x-100x=252000
x=252000/21=12000
4200= y x 20 x 1/100
20y= 4200x100
y= 420000/20=21000
C's profit = Rs. 9000
Ratio of their profit= 12000:21000:9000
= 12:21:9
C's share= 3/14x 7000=15000Rs.
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