Question

the sumof the digit's of a two digit number is9 also nine times this number is rupees 50 and rupees 100 notes only meena got 25 notes is all .find hoe many notes of rupees 50and rupees 100 she received​

Answer 1

Answer:

Let the Rs.50 notes by x and Rs.100 notes be y.

∴ Total notes =(x+y) notes

Total notes (given) =25 notes

∴(x+y)=25⟶(i)

Total money Meena has=50x+100y

Total money (given) =Rs.2000

On simplification,  

x+2y=40⟶(ii)

On substraction (i) and (ii),

−y=−15

y=15 notes

putting y in (i)

x+y=25

x=10 notes

∴ Rs.50 notes=10 notes.

   Rs.100 notes=15 notes.

Explanation: