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In Farmland, one cow can be exchanged for two goats, and three goats
can be exchanged for five chickens. How many chickens can six cows
be exchanged for?
 

tertre  Feb 18, 2018
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2+0 Answers

 #1
avatar+12266 
+1

1c = 2g

or    c = 2g

 

3g=5f     (f= chickens)

g=5/3f     Substitute into the first equation

 

c = 2 (5/3 f)       now you have 6 cows so multiply both sides by 6

6c = (6)(2)(5/3 f) = 60/3 f = 20 f   

6 cows = 20 chickens

ElectricPavlov  Feb 19, 2018
 #2
avatar
+1

5 / 3 = 1 2/3 chickens per goat.

1 2/3 x 2 = 3 1/3 chickens per cow.

3 1/3 x 6 = 20 chickens for 6 cows!!.

Guest Feb 19, 2018
edited by Guest  Feb 19, 2018

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