sally found a wallet while walking down the street and it contained 11 bills in total the wallet only had $5 bills $10 bills and $20 dollar bills in it the total value of bills was $115 and the total amount of the $5 and $10 was $75.Can yall give me the 3 equations

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3