Lets get started :)
1) 1 dozen of eggs costs 3 cowry shells
6 dozens of eggs cost ? cowry shells
We can put this into ratio form and solve my cross multiplying
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18 = ?
6 dozen of eggs is worth of 18 cowry shells
Your answer is C) 18 cowry shells2) I have 7 cowry shells, 1 dozen costs 3 cowry shells
We can only purchase 2 dozens of eggs
2 x 3 = 6 cowry shells, we do not have enough cowry shells to buy more
Your answer is option B) 2 dozens