SOLUTION: a purse contains 3 times as many 20p coins as 1p coin. in total the purse contain 1.83 . how many of each coin are there?

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Question 994365: a purse contains 3 times as many 20p coins as 1p coin. in total the purse contain 1.83 . how many of each coin are there?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
x = number of 20p coins
y = number of 1p coins

x = 3y
20x + y = 183

Substitute the first equation into the second.

20(3y) + y = 183
61y = 183
y = 3

There are 9 20p coins and 3 1p coins.