40*5%= 2
0.07x+0.02y=2
x+y=40
7x+2y=200
2x+2y=80
5x=120
x= 24
7x+2y=200
7x+7y= 280
5y=80
y=16
A: 24gallons of 7%milk
16 gallons of 2% milk
Yes because you can multiply 3/4 by 9/9 and you’ll get 27/36 :)
Set up the equation by writing the number of students in the ratio as a fraction:
3/4= (245-x)/x Cross multiply:
3x= 4(245-x) Multiply on right:
3x= 980-4x Add 4x on both sides:
7x= 980 Divide both sides by 7:
x= 140 this is how many girls there are. And:
245-140= 105= boys
X = -6 hope that helps :)
