Answer:
450
Step-by-step explanation:
3*150 because the 150is your main number or otherwise known as "b" and then 3 is the multiplier so 3 * 150
Answer:
50%
Step-by-step explanation:
As there are only two sides of the coin it will be 50% each.
(2x-20)/3 = 2x start by multiplying both sides by 3
1-3=-2 so -2/8 is -1/4 so negative one fourth
Below are the choices:
A. 80 mL of the 3.5% solution and 120 mL of the 6% solution
<span>B. 120 mL of the 3.5% solution and 80 mL of the 6% solution </span>
<span>C. 140 mL of the 3.5% solution and 60 mL of the 6% solution </span>
<span>D. 120 mL of the 3.5% solution and 80 mL of the 6% solution
</span>
Let fraction of 3.5% in final solution be p.
<span>p * 3.5 + (1 - p) * 6 = 4.5 </span>
<span>3.5p + 6 - 6p = 4.5 </span>
<span>2.5p = 1.5 </span>
<span>p = 3/5 </span>
<span>3/5 * 200 = 120 </span>
<span>Therefore the answer is B. 120 ml of 3.5% and 80 ml of 6%.</span>
