SOLUTION: Jun Wei has 12 more 10 cent coins than 20 cent coins. The total value of all his coins is $5.40. Find the total number of coins he has.

Algebra ->  Linear-equations -> SOLUTION: Jun Wei has 12 more 10 cent coins than 20 cent coins. The total value of all his coins is $5.40. Find the total number of coins he has.      Log On


   

Question 1115448: Jun Wei has 12 more 10 cent coins than 20 cent coins. The total value of all his coins is $5.40. Find the total number of coins he has.
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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%28%28540-12%2A10%29%2F%2810%2B20%29%29%2A2 + 12 = 28 + 12 = 40 coins.