A purse contains some 25p and some 50p coins the total amount in the purse is rs25 if the number of 50p coins is double than the number of 25p coin how many of each are there in the pur se
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let 25paise coins = x
let 50paise coins = y
total money = 25 rupees = 2500 paise
so
25x+50y = 2500
x+2y= 100
= 2x+4y= 200.........(1)
and
2x=y
2x-y = 0........(2)
on subtracting (1) from (2)
2x-2x -y-4y = 0-200
-5y = -200
y=40
so no of 50paise coins = 40
no. of 25paise coins = 40/2 = 20 coins
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let 50paise coins = y
total money = 25 rupees = 2500 paise
so
25x+50y = 2500
x+2y= 100
= 2x+4y= 200.........(1)
and
2x=y
2x-y = 0........(2)
on subtracting (1) from (2)
2x-2x -y-4y = 0-200
-5y = -200
y=40
so no of 50paise coins = 40
no. of 25paise coins = 40/2 = 20 coins
Please friend Mark it Brainly
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