Answer: 
Step-by-step explanation:
Given
The expression is
Use identity 
Apply identity
Answer:
3:2 and 21:14
Step-by-step explanation:
The same side on the larger and smaller cylinders is 30 and 20 respectively or 18 to 12
Simplify:
30:20 => 3:2
18:12 => 3:2
Therefore, the answer is 3:2
However, in addition you can multiply 3 by 7 to get 21 and 2 by 7 to get 14, so 21:14 also works
Percentage of Lemonade = 100 - (15 + 5)
= 100 - 20 = 80%
Now, We have to calculate the 80% of total amount of the drink i.e., 300 ml
So, 300 * 80%
= 300 * 0.80 [ 80% = 0.80 ]
= 240
In short, Your Answer would be: 240 ml
Hope this helps!
Answer: -30 and 30
Step-by-step explanation:
