First start by adding them to find how many total marbles there are
10+40=50 there are 50 marbles and 10 of them are white
10 is 20% of 50 so 20% of the marbles are white
I hope I've helped!
In both a percentage is taken of the money but in the discount the money taken off while in the sales tax money is added.
Well took a while but i believe the answer is 589 hugs and handshakes are exchanged.
Take second equation here,
2x + 9 = -12
2x = -12 - 9
2x = -21
Multiply by 2,
4x = -42
Now, substitute the vaue of 4x in 1st equation,
-42 - y = 2
-y = 2 + 42
y = -44
In short, Your Answer would be -44
Hope this helps!
