The students at Blue Ridge Middle School are going on a field trip to the museum. By Friday afternoon 4/5 of the students had turned in their permission slips. What percent of the students had not turned in their permission slips

A.4%
B.20%
C.45%
D.80%
D?

Bos spends 90% of the money he earns each month and saves the rest. What fraction of his earnings does he save each month
A.1/10
B.1/9
C.11/100
D.9/10
D?

Of 10 sandwiches 20% are tuna sandwiches. Express this percentage as a fraction

A.2/3
B.1/4
C.4/5
D.1/5
D?

The first two are wrong. The third is right.

Suggestion: Read the problems very carefully.

The Blue ridge question

20?

Money question
A?

Both are right now. :-}

THank you

You're welcome.

To find the percentage of students who have not turned in their permission slips, you need to subtract the percentage of students who have turned in their permission slips from 100%.

Here's how you can calculate it:
1. Determine the percentage of students who have turned in their permission slips. In this case, it is given that 4/5 of the students have turned in their permission slips. To convert it to a percentage, divide the numerator (4) by the denominator (5) and multiply by 100: (4/5) * 100 = 80%.

2. Subtract the percentage of students who have turned in their permission slips from 100%: 100% - 80% = 20%.

Therefore, the correct answer is B. 20%.

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To find the fraction of Bos's earnings that he saves each month, you need to subtract the percentage of money he spends from 100%, and then convert that value to a fraction.

Here's how you can calculate it:
1. Determine the percentage of money Bos spends each month. It is given that Bos spends 90% of his earnings. To convert it to the percentage of money he saves, subtract it from 100: 100% - 90% = 10%.

2. Convert the remaining percentage to a fraction by putting it over 100: 10/100.

Therefore, the correct answer is A. 1/10.

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To express 20% of 10 sandwiches as a fraction, you need to divide the percentage by 100 and simplify the fraction.

Here's how you can calculate it:
1. Convert 20% to a decimal by dividing it by 100: 20/100 = 0.2.

2. Simplify the decimal to a fraction. Since it is 0.2, you can write it as 2/10.

3. Simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which in this case is 2: 2/10 รท 2/2 = 1/5.

Therefore, the correct answer is D. 1/5.