40 gramm of active substance per kilogramm
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fraction = 1/5 1 kg = 1000 g 4 kg = 4000 g 800 g/4000g = 8/40 = 1/5
You must first convert kg to g by multiplying kg by 1000 since there are 1000 g per kg.
275 g is 11/40 (eleven-fortieths) of 1 kg.
8 is the answer . Since half a kg is 500g, 100 g would cost 1/5 as much. 1/5 of 40 is 8.
1 kg = 1,000 g2 kg = 2,000 g3 kg = 3,000 g..7 kg = 7,000 g.70 kg = 70,000 g71 kg = 71,000 g71.7 kg = 71,700 g