A bag contains 24 coins. Some of these are 10 cent coins and all of the others are 5 cent coins.
iii) A second bag also contains 24 coins. in this bag the number of 5 cent coins ix x and all of the others are 10 cent coins?
iv) the total value of the coins in the second bag is 30 cents more than the total value of the coins in the first bag. Use this infomation to form an equation in x and hence find x?