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February 28, 2015

February 28, 2015

Posted by **joel** on Thursday, September 22, 2011 at 12:09pm.

- maths urgent -
**oi**, Thursday, September 22, 2011 at 12:54pm350+300=650g

13kg=13000g

13000/650

=20crabs

- maths urgent -
**Reiny**, Thursday, September 22, 2011 at 1:08pmlet number of crabs be x

mass of 1/2 the craps

= 350(x/2) =175x

mass of remaining ones = 300(x/2) = 150x

175x + 150 = 13000

325x = 13000

x = 40

there were 40 crabs

check:

half of 40 = 20

so 20(350) + 20(300) = 13000

oi's answer makes no sense and does not check out.

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