Homework Help: mathematics

Posted by monica on Sunday, August 21, 2011 at 1:07am.

a person has 1&2 rupee coins with him
total amount with him is 75.total number of coins with him is 50.find how many 1&2 rupee coinsare there with him.

mathematics - drwls, Sunday, August 21, 2011 at 1:10am
Solve these two equations for x and y:

x + y = 50

x + 2y = 75

(y is the number of 2 rupee coins; x is the number of 1 rupee coins)

Clearly y = 25, and x is also 25.
mathematics - santosh, Sunday, August 21, 2011 at 1:12am
he has 25 one rupee coins and 25 two rupee coins together he has 50 coins with total amount of 75 rupees

1*25+2*25=25+50=75 rupees

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