Answers

2014-07-22T22:19:12+08:00
 ( 500g x 12 x 28 ) /2 = 42,000 kilograms for 4 weeks

explanation: 
how did I get 12 - Dozen means twelve
how did I get 28 - 1 week is equals to 7 days so, 4 weeks is equals to 28 days
how did I get 2 - In 1 kilogram there are 1000 grams so, 1000 grams divided by 500 grams (given) is equals to 2

( hope this helps... I think )
1 4 1
No. 500kg÷1000 is .5. Baliktad po divide nyo.
2014-07-23T14:06:18+08:00
(500g x 28) /2 = 42, 000 kg 
1 1 1
Ang sagot po ay 168 kg. How?
1 piglet = 500 g/day. Eto po muna i convert. 500g to kg. 1kg=1000g so pabalik po. 500÷100= .5kg/day each piglet. Then yung days. 1 wk = 7 days. 7×4= 28. So 0.5×28=14kg for 4 wks per piglet. Then imultiply na natin ang 14 sa dami ng piglets which is 12. So the answer is 168kg of feeds are needed to feed a dozen of piglets in 4 weeks. :)