Which of the following is the median of the date set below? 9, -4, 6, -1, 13

A. 9

B. 6

C. -1

D. -4

Answer Explanation:

To find the median, we arrange the give dataset in ascending order -4, -1, 6, 9, 13 There are 5 five numbers in the dataset and median will fall in (frac{(5+1)}{2}) position, which is third position. The element in the third position is 6. Therefore, 6 is the median of the give set of data.

Therefore, the Correct Answer is B.

Q #1: A macaroni and cheese recipe calls for 4/7 cup of flour for every 2 1/5 cup of milk. To make a bigger batch, the chef uses 4 cups of flour. Which of the following would be the amount of milk needed for the bigger batch?

A. 15 1/5 cups

B. 15 2/5

C. 12 8/15 cups

D. 15 cups

Answer Explanation

To find the required number of cups of milk, we need to set up a proportion equation. If we let x be the required number of cups and cups of flour as numerator and cups of milk in denominator, then the result proportion becomes:

We cannot multiply mixed fractions with any number, so we change 2 1/5 into an improper fraction as

The proportion equation becomes

Cross-multiply to solve for x

As a mixed fraction, 77/5 becomes 15 2/5. Therefore, to make a bigger batch, the chef needs 15 2/5 cups of milk.
Q #2: Which of the following is the equivalence in kilograms for 300 lb? (2.2 lb=1 kg)

A. 136.4 lb

B. 156.3 lb

C. 240.5 lb

D. 126.2 lb

Answer Explanation
Q #3: Four friends are sharing a pizza. One friend eats a third of the pizza. The other three friends equally divide the rest among themselves. What portion of the pizza did each of the other three friends receive?

A. 7/9

B. 1/3

C. 1/3

D. 2/9

Answer Explanation

We are asked to find a fraction of pizza other three friends got.

A whole pizza represents 1, and one friend eats 1/3 of 1=1/3*1=1/3

Now, the remaining pizza is 1-1/3=3/3-1/3=2/3

The three friends share 2/3 of pizza equally. So, each friend gets

Therefore, each of the three friends get 2/9 of the pizza.