For each month of a given year except December, a worker earned the same monthly salary and donated one-tenth of that salary to charity. In December, the worker earned N times his usual monthly salary and donated one-third of his earnings to charity. If the worker's charitable contributions totaled one-eighth of his earnings for the entire year, what is the value of N?	Choose the correct choice from the following answers
A) 8/5 B) 5/2 C) 3 D) 33/25 E) 4
Let monthly salary for each of the 11 months except 33/25ecember was x, then   11x*1/10 + Nx*1/3 = 1/8(11x + Nx);   11/10 + N/3 = 1/8(11 + N)   33+10N/30= 11+N/8 =&gt;264+80N= 330+30N=&gt;50N=66   N = 66/50=33/25   Answer: 33/25.
<result>D</result>
For each month of a given year except December, a worker earned the same monthly salary and donated one-tenth of that salary to charity. In December, the worker earned N times his usual monthly salary and donated one-third of his earnings to charity. If the worker's charitable contributions totaled one-eighth of his earnings for the entire year, what is the value of N?