Present age of ‘A’ is 25% more than the present age of ‘B’. Present age of ‘B’ is 40% less than the present age of ‘C’. Fifty years hence from now, age of ‘C’ will be 11 {1/9}% more than sum of age of ‘B’ ten years hence from now and age of the ‘A’ twelve and a half years hence from now. Find the present age of ‘B’.