There are 2 printers installed to print some pages. If you have to find out how many pages will the printers print at 35°C when one printer’s work is directly proportional and the others printer work is inversely proportional to the temperature and the total work done at 15°C is 20 pages and that done on 20°C is 25 pages?
Answers:
A) 40 pages  B) 41.2 pages  C) 40.7 pages  D) 43.2 pages  E) 39.7 pages
If 1st Printer works directly proportional to the temperature with constant K1 and   2nd printer works inversely proportional to the temperature with constant K2, then   Pages printed at particular temperature= T1*K1 + K2/T2 ----(i)   15K1+ (K2/15) = 20 ----(ii) &amp;   20K1+ (K2/20) = 25 ----(iii)   On solving (ii) &amp; (iii), K1=8/7 ,K2=300/7   From (i), Total pages printed at 35°C = (35*8/7) + [300/(7*35)] =40 + (60/49)= 41.22   ANSWER:41.2 pages
<result>B</result>
There are 2 printers installed to print some pages. If you have to find out how many pages will the printers print at 35°C when one printer’s work is directly proportional and the others printer work is inversely proportional to the temperature and the total work done at 15°C is 20 pages and that done on 20°C is 25 pages?