The cost of 10 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 one:
A) Rs 52.50 B) Rs 56 C) Rs 58.50 D) Rs 84 E) None of these
Explanation :   Let the required cost be Rs. x. Then,   More packets, More cost (Rs 84irect Proportion)   More weight, More cost (Rs 84irect Proportion)   Packets 10 : 27   Weight 900 : 1000 :: 28 : x   (10 x 900 x x) = (27 x 1000 x 28)   x = (27 x 1000 x 28) /10 x 900   = 84   Answer Rs 84
<result>D</result>
The cost of 10 packets of sugar, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg?