Question

a women has 60 notes of all ₹10 and ₹20 denominator if the total worth is₹850 find out hoe many notes of each kind does he have. ​

Answer 1

Answer:

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Step-by-step explanation:

let no of Rs 10 notes=x

let no of Rs 20 notes=y

x+y=60

x=60-y.................first equation

10x+20y=850......................second equation

solve by substituting x as 60-y in second equation

10(60-y)+20y=850

600-10y+20y=850

600+10y=850

10y=850-600

10y=250

y=250/10

y=25

x=60-y(using first equation)

x=60-25

x=35

therefore,no of Rs 10 notes=35

              no of Rs20 notes=25

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