Let C invests Rs.x
Therefore, B invests = Rs(x-10% of x)
A is said to invest 10% more than B.
A invests=Rs.(9x/10+10%of 9x/10)
=Rs . 9x/10+9x/100
Given ,sum of their investments=Rs.5780
Therefore,By the condition
or, 99x+90x+100x=5780*100 (After multiplying by 100,the LCM of the denominators)
Therefore, C invested
Ans)C invested Rs.2000.