In store A there are 10 pairs of pants for every 30 store B has. The price ratio between the pants in store B and the pants in store A is 3:4. If all the pants were sold in both places until the stock ran out, what is the ratio between the total amount stores A earned to the total amount store B earned?  Choose the most appropriate option.
A) 3:16.	B) 2:3.	C) 4:9	D) 3:4.	E) 2:5.
1st statement : ratio of pants   Store A : Store B   10x : 30x   X:3X   Price :   4y:3y   Total revenue   4xy : 9xy   4:9   Answer : 4:9
<result>C</result>
In store A there are 10 pairs of pants for every 30 store B has. The price ratio between the pants in store B and the pants in store A is 3:4. If all the pants were sold in both places until the stock ran out, what is the ratio between the total amount stores A earned to the total amount store B earned?