Answer:
10
Step-by-step explanation:
The current probability of picking a red ball is . When 5 more balls are added, the probability is 3/4. We can write a ratio for this problem:
When using cross multiplication to solve this, you get 3 * 20 = 4(x+5).
60 = 4x + 20
40 = 4x
x = 10 red balls
Division is one of the basic mathematical operations. The cost of Brand A and B is the same.
<h3>What is division?</h3>The division is one of the most basic arithmetic operations. It is used to find the number of times a number is been added to itself.
Given to us
Brand A: 14 ounces for $44.66
Brand B: 20 ounces for $63.80
To compare the two brands we will find the cost of one ounce for each brand.
For Brand A,
The cost of 14 ounces is $44.66, therefore,
For Brand B,
The cost of 20 ounces is $63.80, therefore,
From the above two values, we can conclude that the cost of Brand A and B is the same.
Learn more about Division: