Science Biology question about mass of animals? 10 points best answer!
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Science Biology question about mass of animals? 10 points best answer!

[From: ] [author: ] [Date: 12-03-11] [Hit: ]
(.*Note the difference in units! Kg vs g.Hope this helps!......
A blue whale eats 4000 kg per day and a rat eats about 15 g per day. Both animals replace about 5 percent of their body mass each day.
What is the approximate mass of both animals?
I can't figure this question out, please help and 10 points! Thank You!!

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It seems to be stating that the mass of food they are eating is 5 percent of their total body weight. In that case you have to figure out, say in the blue whale's case, 5% of what is 4000?

Approximate mass of Blue Whale:
(.05)(x) = 4000 kg
x = 80,000 kg mass for a Blue Whale

Approximate mass of Rat:
(.05)(x) = 15 g
x = 300 g mass for a Rat

*Note the difference in units! Kg vs g.

Hope this helps!
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