Answer:
50 % alcohol solution = 10 millimetres
30 % alcohol solution = 90 millimetres
Step-by-step explanation:
two equations can be derived from this question
x + y = 100 equation 1
0.3x + 0.5y = 100 x 0.32 = 32
0.3x + 0.5y = 32 equation 2
where :
x = 30% alcohol solution
y = 50% alcohol solution
multiply equation 1 by 0.3
0.3x + 0.3y = 30 equation 3
subtract equation 3 from 2
0.2y = 2
y = 10
substitute for y in equation 1
x + 10 = 100
x = 100 - 10
x = 90
Answer: is the answer b? 84.5?
Step-by-step explanation:
Answer:
Change in elevation per minute = 2ft/min
Step-by-step explanation:
Change in elevation per minute = elevation ÷ time
Change in elevation per minute = 8÷4 = 2ft/min
The answer is 11:100 and 11%
