Answer:
15 mL of the solution with 20% water will be needed.
Step-by-step explanation:
Use the inverse relationship
10 mL * (18-15)% = x mL * (20-18)%
x = 10 mL * (3/2) = 15 mL
If the top is $48 and it is 60% off you will multiply the cost by the decimal form of the sale percentage: 48*0.60= $28.80. This is the amount she will save and I think is the answer you are looking for.
If there is a follow up question asking for the final cost of the top you would find that by subtracting the amount saved from the original cost: 48.00-28.80=$19.20.
Answer:
0.6127 = 61.27% probability of selling no more than 6 properties in one week.
Step-by-step explanation:
For each property, there are only two possible outcomes. Either it is sold, or it is not. The probability of a property being sold is independent of any other property. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
12 properties
This means that 
She feels that there is a 50% chance of selling any one property during a week.
This means that 
Compute the probability of selling no more than 6 properties in one week.
This is:

In which









0.6127 = 61.27% probability of selling no more than 6 properties in one week.
Will drank
grams of sugar.
Step-by-step explanation:
Given,
Amount of sugar in one bottle = 
Amount of bottles drank by Will = 
Total sugar drank by Will = Amount of sugar in one bottle * Amount of bottles drank by Will
Total sugar drank by Will = 
Total sugar drank by Will = 
Total sugar drank by Will = 
Will drank
grams of sugar.
Keywords: fraction, multiplication
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