Canon has 10 rupees and 5 rupees in her purse if the total number of is 57 and the total value is Rs 395 find the number of and each type of coin
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here 10x + 5y =395. -equation1
and x+y=57. -equation2
multiply equation 2 by 10
10x + 10y=570
10x+ 5y. =395
-___-____-____
5y= 175
y=35
x=57-35
=40
10 rupees coin are 40 and 5 rupees coin are 35 in number totally 395 rupees
and x+y=57. -equation2
multiply equation 2 by 10
10x + 10y=570
10x+ 5y. =395
-___-____-____
5y= 175
y=35
x=57-35
=40
10 rupees coin are 40 and 5 rupees coin are 35 in number totally 395 rupees
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