plz answar the above questions
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AdityaJaiswal111:
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let x be the number of 10 rupee notes and y be the number of 20rupee note
given,
x+y=50 and 10x+20y=800
on solve the two equations by multiplying the first equation by 10 and subtract it from 2nd equation
=> 10x+20y=800
- (10x+10y=500)
=> 10y = 300
=> y = 30
put y=30 in 1st equation to get x+30 = 50 => x=20
therefore there are 20 ten rupee notes and 30 twenty rupee notes
hope this helps u!!!
given,
x+y=50 and 10x+20y=800
on solve the two equations by multiplying the first equation by 10 and subtract it from 2nd equation
=> 10x+20y=800
- (10x+10y=500)
=> 10y = 300
=> y = 30
put y=30 in 1st equation to get x+30 = 50 => x=20
therefore there are 20 ten rupee notes and 30 twenty rupee notes
hope this helps u!!!
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