70 coins of 10 paise and 50 paise are mixed in a purse. If the total value of the money in the purse is Rs.90. Find the number of each type of coin.
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let the number of paise coin be x and the number of 50 paise coin be y .
so , according to question ,
x+ y =70 ...........(i)
now , since the total amount is Rs. 90
so , 10x/100 + 50y/100 = Rs 90
i.e x/10 + y/2 = Rs. 90
x+5y = 900 .........(ii)
on solving , we get
x = 137.25
and y = 207.25
which is not possible .
so please verify the question once again.
so , according to question ,
x+ y =70 ...........(i)
now , since the total amount is Rs. 90
so , 10x/100 + 50y/100 = Rs 90
i.e x/10 + y/2 = Rs. 90
x+5y = 900 .........(ii)
on solving , we get
x = 137.25
and y = 207.25
which is not possible .
so please verify the question once again.
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