SOLUTION: Mario invested 855 in 45 and 25 stock shares. The number of 25 shares was nine less than three times the number of 45 shares. How many of each type of share did he buy .

SOLUTION: Mario invested 855 in 45 and 25 stock shares. The number of 25 shares was nine less than three times the number of 45 shares. How many of each type of share did he buy .

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Question 1133733: Mario invested 855 in 45 and 25 stock shares. The number of 25 shares was nine less than three times the number of 45 shares. How many of each type of share did he buy .
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
x + y = 855
x = 3y - 9
.
3y - 9 + y = 855
4y = 864
y = 216 this is the amount invested in 45 stock shares
855-216 = 639 this is the amount invested in 25 stock shares

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