The cost of 20 packets of sugar, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg? Options:
A) Rs 42	B) Rs 56	C) Rs 58.50	D) Rs 64.75	E) None of these
Explanation :   Let the required cost be Rs. x. Then,   More packets, More cost (Direct Proportion)   More weight, More cost (Direct Proportion)   Packets 20 : 27   Weight 900 : 1000 :: 28 : x   (20 x 900 x x) = (27 x 1000 x 28)   x = (27 x 1000 x 28) /20 x 900   =42   Rs 42nswer Rs 42
<result>A</result>
The cost of 20 packets of sugar, each weighing 900 grams is Rs. 28. What will be the cost of 27 packets, if each packet weighs 1 kg?