It would take him 30 seconds to write a full page
6x-6=8x
subtract 6x from both sides
-6=2x
divide both sides by 2
x= -3
Answer:
400milliliters
Step-by-step explanation:
Let x=ml of 30% solution B used in resulting mixture.
800+x=ml of resulting 30% solution
40%(800)+10%x=30%(800+x)
Then we can simplify the expression
0.4(800)+0.10x= 0.30(800+x)
320+0.10x=240+0.30x
80=0.20x
x= 400milliliters
Therefore, 400milliliters of 10% solution B used in resulting mixture.
5×3=15 (total circles)
15÷6 = 2.5 ( circles each students get )
