Question

solve the equation 5x+11y=146
11x+5y=110

Answer 1

Hii !!



5x + 11y = 146 ------------(1)


And,



11x + 5y = 110 --------------(2)



From equation (1) , we get



5x + 11y = 146



5x = ( 146 - 11y )



X = ( 146 - 11y /5) ------------(3)


Putting the value of X in equation (2) , we get




11x + 5y = 110


11 × ( 146 - 11y /5) + 5y = 110




1606 - 121Y/5 + 5y = 110



1606 - 121Y + 25Y = 110 × 5




-121Y + 25Y + 1606 = 550



-96Y = 550 - 1606



-96Y = - 1056



Y = 1056/96


Y = 11

Putting the value of Y in equation (3) , we get


X = ( 146 - 11Y/5 ) = ( 146 - 11 × 11 /5 )



X = ( 146 - 121 / 5 )


X = 25/5 = 5.


Hence,


X = 5 and Y = 11.

Answer 2

Step-by-step explanation:

By selling a fan for Rs.649, Anil earns a profit of 18%.Find the cost price of the fan.