2016 AMC 8

The longest professional tennis match ever played lasted a total of $11$ hours and $5$ minutes. How many minutes was this?

In rectangle $ABCD,$ $AB=6$ and $AD=8.$ Point $M$ is the midpoint of $\overline{AD}.$ What is the area of $\triangle AMC?$

Four students take an exam. Three of their scores are $70,$ $80,$ and $90.$ If the average of their four scores is $70,$ then what is the remaining score?

When Cheenu was a boy he could run $15$ miles in $3$ hours and $30$ minutes. As an old man he can now walk $10$ miles in $4$ hours. How many minutes longer does it take for him to walk a mile now compared to when he was a boy?

The number $N$ is a two-digit number with the following properties:

When $N$ is divided by $9,$ the remainder is $1.$ When $N$ is divided by $10,$ the remainder is $3.$

What is the remainder when $N$ is divided by $11?$

The following bar graph represents the length (in letters) of the names of $19$ people. What is the median length of these names?

Which of the following numbers is not a perfect square?

Find the value of the expression $$
\begin{gathered} 100 - 98 + 96 - 94 + 92 - 90 \\ {}+ \cdots + 8 - 6 + 4 - 2. \end{gathered}
$$

What is the sum of the distinct prime integer divisors of $2016?$

Suppose that $a \ast b$ means $3a - b.$ What is the value of $x$ if $$
2 \ast (5 \ast x) = 1?
$$

Determine how many two-digit numbers satisfy the following property:

When the number is added to the number obtained by reversing its digits, the sum is $132.$

Jefferson Middle School has the same number of boys and girls. Three-fourths of the girls and two-thirds of the boys went on a field trip. What fraction of the students on the field trip were girls?

Two different numbers are randomly selected from the set $$
\{ - 2, -1, 0, 3, 4, 5\}
$$ and multiplied together. What is the probability that the product is $0?$

Karl’s car uses a gallon of gas every $35$ miles, and his gas tank holds $14$ gallons when it is full.

One day, Karl started with a full tank of gas, drove $350$ miles, bought $8$ gallons of gas, and continued driving to his destination. When he arrived, his gas tank was half full. How many miles did Karl drive that day?

What is the largest power of $2$ that is a divisor of $13^4 - 11^4?$

Annie and Bonnie are running laps around a $400$-meter oval track. They started together, but Annie has pulled ahead, because she runs $25\%$ faster than Bonnie. How many laps will Annie have run when she first passes Bonnie?

An ATM password at Fred’s Bank is composed of four digits from $0$ to $9,$ with repeated digits allowable. If no password may begin with the sequence $9,$ $1,$ $1,$ then how many passwords are possible?

In an All-Area track meet, $216$ sprinters enter a $100$-meter dash competition. The track has $6$ lanes, so only $6$ sprinters can compete at a time. At the end of each race, the five non-winners are eliminated, and the winner will compete again in a later race.

How many races are needed to determine the champion sprinter?

The sum of $25$ consecutive even integers is $10{,}000.$ What is the largest of these $25$ consecutive even integers?

The least common multiple of $a$ and $b$ is $12,$ and the least common multiple of $b$ and $c$ is $15.$ What is the least possible value of the least common multiple of $a$ and $c?$