Question

mathe help ss below :p

Answer 1

@snowflake0531

Answer 2

I don't understand what you wrote so far but

FIrst looking at the first sentence
sum of their weight = 9 times difference of weights
So we have x+y=9(x-y)

And second sentence
Positive difference of weight is sum minus 240
x-y=x+y-240

agreed?

Answer 3

oh yes! I must have misread the problem Xp

Answer 4

I think i can go from here :) thanks

Answer 5

yw~ xdd