the sum of 12 hundred is in the form of denomination of rupees 10 and rupees 20 if the total number of notes is sixty find number of notes each rupees
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Let 10 rupees notes=x
20 rupees notes=y
x + y=60
x =60-y (eq 1)
10x+20y =1200
10(60-y) +20y =1200
600-10y+20y =1200
10y =1200-600
y =600/10
y =60
20 rupees notes=y
x + y=60
x =60-y (eq 1)
10x+20y =1200
10(60-y) +20y =1200
600-10y+20y =1200
10y =1200-600
y =600/10
y =60
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