Let x=gallons of 80% solution to be mixed
x+80=gallons go final 70% mixture
..
80%*x+30%*80=70%*(x+80)
.8x+24=.7x+56
.1x=32
x=320
gallons of 80% solution to be mixed=320
Correct the first way is 1to1, 1:1, 1 boy to 1 girl .
Answer:
Step-by-step explanation:
X = 3, since the 3 on the X-Axis is marked and not 3 on the Y-Axis
He would have to sell $20,000 worth of clothes to get $2,000