Question

A lady goes to a bank and gets 40 notes of rs 10 and rs 50. It she had 1000 rs find how many notes she got
of each rupee?​

Answer 1

Step-by-step explanation:

Let's Rs.10and Rs.50 be x and y respectively

given,notes = 40

therefore,. x+y=40

x=40-y let's be eq..1

Again,

10x+50y=1000

x=(1000-50y)/10 let's be eq..2

From eq... 1 and 2 we get

40-y=(1000-50y)/10. now cross multiple

400-10y=1000-50y

50y-10y=1000-400

40y=600

y=600/40

y=15

No, putting the value of. y. in eq.. 1

x+y=40

x=40-y

x=40-15

x=25

Therefore,

10 rupee notes = 25

50 rupee notes=15