Answer:
40%.
Step-by-step explanation:
The discount is 1.50 - 0.90 = $0.60.
Percent discount =(0.60 * 100) / 1.50
= 40%.
16:6 is an equivalent ratio
Answer:
Take 
Step-by-step explanation:
To begin notice that

If we chose the following delta

that solves our problem !
The answer is really easy you can go through anything