Question

10%of x+20%ofy=24, 3x-y=20​

Answer 1

Answer:

10x / 100 + 20y/100 =24

10x + 20y / 100 = 24

10x + 20y = 2400

from this eqn write y in terms of x

and substitute in 3x - y = 20

.then you can find x value .

then do , 3x - 20 to get y value

hope it helps you plz mark me as the brainliest plz plz plz iam new

Answer 2

Answer:

x = 40, y = 100

explanation :

given, 3x - y = 20

=> y = 3x-20

given, 10%of x+20%ofy = 24

=> x/10 + 2y/10 = 24

=> (x + 2y)/10 = 24

=> x + 2y = 240

(subtituting y=3x-20)

=> x + 2(3x-20) = 240

=> x + 6x - 40 = 240

=> 7x = 240 + 40 = 280

=> x = 280/7

=> x = 40

=> y = 3(40) -20 = 120-20 = 100