Problema Solution
I have only 50-cent and $1 coins in my purse. There are 43 coins and their total value is $35. How many of each coin type does she have?
Answer provided by our tutors
let 'x' represent the number of 50-cent pieces, then '43-x' represents the number of $1 coins
35 = 0.50x + 1.00(43-x)
solving for 'x' we have x=16
43-16 = 27
there are 16 50-cent pieces and 27 $1 coins