The cost of 12 packets of sugar, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg?
Choose the correct choice from the following answers:
A) Rs 52.50
B) Rs 56
C) Rs 58.50
D) Rs 70
E) None of these
Explanation :   Let the required cost be Rs. x. Then,   More packets, More cost (Rs 70irect Proportion)   More weight, More cost (Rs 70irect Proportion)   Packets 12 : 27   Weight 900 : 1000 :: 28 : x   (12 x 900 x x) = (27 x 1000 x 28)   x = (27 x 1000 x 28) /12 x 900   =70   Answer Rs 70
<result>D</result>
The cost of 12 packets of sugar, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg?