Mathematics : asked on kailaaap
 15.10.2020

Astudent answered three questions on a 40-percent test incorrectly. what percent did the student answer correctly

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30.05.2023, solved by verified expert
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The percentage of questions correctly answered by the student was 92.5%

Step-by-step explanation:

1. Let's review the data given to us for solving the question:

Number of questions incorrectly answered by the student = 3

Number of questions on the test = 40

2. What percentage did the student answer correctly?

Number of questions correctly answered by the student = Number of questions on the test - Number of questions incorrectly answered by the student

Replacing with the real values:

Number of questions correctly answered by the student = 40 - 3

Number of questions correctly answered by the student = 37

Now, let's calculate the percentage:

Percentage = Number of questions correctly answered by the student /Number of questions on the test * 100

Percentage = 37 /40 * 100

Percentage = 0.925 * 100

Percentage = 92.5%

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Mathematics
Step-by-step answer
P Answered by PhD

The percentage of questions correctly answered by the student was 92.5%

Step-by-step explanation:

1. Let's review the data given to us for solving the question:

Number of questions incorrectly answered by the student = 3

Number of questions on the test = 40

2. What percentage did the student answer correctly?

Number of questions correctly answered by the student = Number of questions on the test - Number of questions incorrectly answered by the student

Replacing with the real values:

Number of questions correctly answered by the student = 40 - 3

Number of questions correctly answered by the student = 37

Now, let's calculate the percentage:

Percentage = Number of questions correctly answered by the student /Number of questions on the test * 100

Percentage = 37 /40 * 100

Percentage = 0.925 * 100

Percentage = 92.5%

Mathematics
Step-by-step answer
P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

Mathematics
Step-by-step answer
P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Mathematics
Step-by-step answer
P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Mathematics
Step-by-step answer
P Answered by PhD

Let the father's age be x and son's be y

10 years before-

Father age=x-10

sons age=y-10

Given,

x-10=10(y-10)

x-10=10y-100

Given present age of father=40

therefore,

x=40

40-10=10y-100

10y-100=30

10y=130

y=130/10

y=13

Therefore present age of son=13years

Mathematics
Step-by-step answer
P Answered by PhD

Given height of gymnasium is 5/6 height of 30 foot ball

therefore height of gymnasium=5/6 * 30

=25 feet

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