What is the mean of this data set? (8,3,4)

A) 15
B) 7.5
C) 5

c

Step-by-step explanation:

add all the three numbers then divid by 3

3.6 qt. and 2.4 qt respectively

Step-by-step explanation:

Let x be x% of 50% saline solution. And (100-x%) be the percentage of 60% saline solution.

54=x*(50/100)+(100-x)*(60/100), solving it we will get x=60%. So we need 3.6 qt. of 50% saline solution and 2.4 qt. of 60% saline solution