Question

A SUM OF RUPEE 800 IS IN FORM OF DENOMINATION RUPEE 10 AND 20 .IF TOTAL NOTE IS 50 FIND THE NUMBER OF NOTE OF EACH TYPE .

Answer 1

Step-by-step explanation:

Let 10 rupee be x and 20 ruppe be y.

10x+20y =800 -----(1)

total number of note =50

x +y= 50 ------(2)

from (1) x +2y=80-------(3)

eqn (3) -(2)

y=30

putting value of y in eqn(2) we get x =20