Question

If 3x=5y then x+y=80 then y=?

Answer 1

Given that ,

3x = 5y

X = 5y / 3

putting the value of y now..

5 y / 3 + y = 80

5y + 3y / 3 = 80

8y = 80 × 3

y = 30

Answer 2

Heya !!!




X + Y = 80 -----(1)



3X = 5Y --------(2)



From equation (1) we get,


X + Y = 80


X = ( 80 - Y ) ------(3)


Putting the value of X in equation (2)


3X = 5Y

3 × (80 - Y ) = 5Y


240 - 3Y = 5Y


5Y + 3Y = 240


8Y = 240


Y = 240/8 = 30



Hence,


Value of Y is 30.


★ HOPE IT WILL HELP YOU ★