Which of the following percentages is equivalent to the fraction below? 5/8

A. 1.6%

B. 6.25%

C. 62.5%

D. 160%

Answer Explanation:

to convert fraction to percent, we multiply the fraction with 100. Therefore, the percent equivalent of 5/8 is

Thus, 5/8 is equal to 62.5%.

Therefore, the Correct Answer is C.

Q #1: If a box of 35 syringes costs $560.00, which of the following is the cost of two syringes?

A. $15.00

B. $16.00

C. $32.00

D. $8.00

Answer Explanation

the question requires we find the cost of two syringes.

If we let x be the cost of two syringes, then we set up a proportion equation with cost as numerator and number of syringes as denominator. The proportion equation becomes

Cross-multiply to solve for x

Rearranging the above

Divide both sides by 35

The cost of 2 syringes is $32.
Q #2: Which of the following relationships represents a positive correlation between two variables?

A. As a student’s class attendance decreases, the student’s overall grade remains the same

B. As the number of hours a person exercises decreases, the weight of that person increases

C. As the number of miles driven increases, the amount of the gasoline in the tank decreases

D. As the amount of water plant receives increases, the growth rate of the plant increase.

Answer Explanation

Correlation of two variables falls into:

Positive correlation: an increase in one variable causes another variable to increase

Negative correlation: an increase in one variable causes another one to decrease

No correlation: a change in one variable does not cause any response in another variable.

From the given choices

Option a is no correlation

Option b is a negative correlation

Option c is a negative correlation

Option d is a positive correlation
Q #3: A couple dining at a restaurant receives a bill for $38.40. They wish to leave a 15% gratuity. Which of the following is the estimated gratuity?

A. $4.00

B. $6.00

C. $5.00

D. $7.00
Answer Explanation

When dealing with percent problems, the following is utilized to find the unknown variable.
- Is means equals
- Of means multiply
- What means unknown (variable)
From the problem above, we are looking for the amount of gratuity the couple can leave.

Let t be the amount of gratuity. Translating into an equation, we have

The gratuity is 15% of the total bill, which becomes

Here, of means multiply and we also convert percent into decimal before multiplying.

So, the value of t=5.76

Thus, a couple will leave a gratuity of $5.76, which is about $6.00.