Jamar has 90 cents in his pocket. One coin is a quarter, and the others are nickels. How many nickels does he have?
A. 23
B. 65
C. 13
D. 15

C. 13

Step-by-step explanation:

Quarters are worth 25 cents each

Nickels are worth 5 cents each

Let n be the number of nickels that Jamar as in his pocket.

We already know that he only has 1 quarter in his pocket which is worth 25 cents, so we can form this equation:

5n + 25 = 90

5 meaning that each nickel is worth 5 cents, 25 meaning that he has only 1 quarter in his pocket (25 cents) and 90 meaning that he has a total of 25 cents in his pocket.

We have to isolate the n so we can subtract 25 from both sides to get:

5n = 65

After that we can get n by dividing 5 from both sides:

n = 13

Therefore there are 13 nickels in his pocket.

Let me know if I did anything incorrectly.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest