Question

if 99x + 101y = 499 and 101x+ 99y = 501 find value of ( x + y ) *

Answer 1

Answer:

Given that 99x + 101y = 499 … (1)

101x + 99y = 501 … (2)

Adding equations (1) and (2), we get.

200x + 200y = 1000 Or, x + y = 5 … (3)

Subtracting (1) from (2), we get,

2x – 2y = 2 Or, x – y = 1 … (4)

Adding (3) and (4), we get,

2x = 6 x = 3

Putting the value of x in (3),

we get, y = 2

Step-by-step explanation:

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