Compound X contains elements A and B at an approximate ratio, by weight, of 2:10. Approximately how many grams of element B are there in 330 grams of compound X?	Pick.
A) 54
B) 162
C) 250
D) 275
E) 322
total number of fractions =2+10= 
<gadget id="calculator">2+10</gadget>
<output>12</output>
12   element B constitutes=10 out of 12 parts of X   So in 330 gms of X have 330*10/12= 
<gadget id="calculator">330*10/12</gadget>
<output>275</output>
275 gms of B   and  330-275= 
<gadget id="calculator"> 330-275</gadget>
<output>55</output>
55 gms of A.   cross check:- A/B= 55/275 =2/10 (as given)   Ans 275
<result>D</result>
Compound X contains elements A and B at an approximate ratio, by weight, of 2:10. Approximately how many grams of element B are there in 330 grams of compound X?