Shristi has a total rs780 currency notes in denomination of rs 10 , rs 20 , rs 50.
The ratio of rs 50 and rs 10 is in the ratio 3:2. If she has total 32 notes how many denomination of each note she have.
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let rs 50 notes =3x
let rs 10 notes=2x
then, 20 rs notes=32-(2x+3x)=32-5x
value of 50 rs notes=3x(50)=150x
value of rs 10 notes=2x(10)=20x
value of rs 20 notes=(32-5x)20=640-100x
according to the question
150x+20x+640-100x=780
70x+640=780
70x=780-640
70x=140
x=2
no of 50 rs notes=3x= 3×2=6
no of 10 rs notes=2x=2×2=4
no of 20 rs notes=32-5x=32-10=22
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