Answer:
for 12-8: 33.33
or
for 8-4: 50
or
for 12-4: 66.67
Step-by-step explanation:
Answer:
$3.45
Step-by-step explanation:
$20.30 / 10 = $2.30 = 10%
$2.30 / 2 = $1.15 = 5%
$2.30 + $1.15 = $3.45 = 15%
Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid
D, because a histogram does not show individual data points
