The answer would be C. 3x + y = 5
The answer is A that part is hard in math
Check the picture below
should be pretty obvious how much silver is needed
just add the volumes
Okay make an proportion:
240 x
____=________
250 100
Now do 240×100=24000
24000÷250= 96
100-96=4
So 4%
The answer is x=9 because if you do 3x+-2 that gives you 1 and 1 divided by 9 is 9 and you get that by getting rid of your 6 first and adding it to the 3 from 3(x+1)