Question

52packets of 12pencils cost Rs 499.20 Find the cost of 65 packets of 10 pencils each

Answer 1

hello..
 Question :-52packets of 12pencils cost Rs 499.20 Find the cost of 65 packets of 10 pencils each?

Solution :-
   52 packets of 12 pencil contains pencils = 52*12 = 624 pencils
and  52 packets of 12 pencil  costs = 499.20
 so each pencils costs =499.20/624 =0.8 rs

Now,
      65 packet of 10 pencil contains pencils = 65*10 = 650 pencils 
  and each pencils costs rs = 0.8 rs
so,  65 packet of 10 pencil costs rs = 650 * 0.8 = 520 rs Answer

Hope it helps.....