The cost of 16 packets of salt,each weighing 900 grams is Rs. 28.What will be the cost of 27 packets,if each packet weight 1 kg ?
Pick one
A) Rs.52.50  B) Rs.56  C) Rs.58.50  D) Rs.64.75  E) None of these
Solution   Let the required cost be Rs. x. Then,   More packets, More cost (Direct Proportion)   More weight, More cost (Direct Proportion)   ∴ (16 × 900 × x) = (27 × 1000 × 28) ⇔ x =(27x1000x28)/16x900=105/2= 
<gadget id="calculator">105/2</gadget>
<output>105/2 = around 52.5</output>
52.50 .Rs.52.50nswer Rs.52.50
<result>A</result>
The cost of 16 packets of salt,each weighing 900 grams is Rs. 28.What will be the cost of 27 packets,if each packet weight 1 kg ?