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Magoosh	A certain barrel is$$\frac{1}{5} $$full. When k liters of liquid are added to the barrel, it becomes$$\frac{ 2}{3}$$ full. In terms of k, what is the capacity of the barrel, in liters?
Ready4	If $<font color='#FE8080'>k</font>$ is a positive integer, then $<font color='#FE8080'>k</font>(<font color='#FE8080'>k</font>+1)(<font color='#FE8080'>k</font>+3)$ is
	The average (arithmetic mean) cost per book for the 12 books on a certain table is k dollars. If a book that costs 18 dollars is removed from the table and replaced by a book that costs 42 dollars, then in terms of k, what will be the average cost per book, in dollars, for the books on the table?
Magoosh	Seven years ago Bob was k times as old as Ann. If Ann is now 11 years old, what is Bob's present age in terms of k?
	Which of the following is equal to $$({2}^{k})({5}^{k-1})$$?
191020	Given x = 3-√2, which of the following equations has a value of 0 when k is an integer?
Ready4	The $x$ -coordinate of the center of circle $P$ shown above is twice the length of its radius and the $y$ -coordinate is three times the length of its radius. If the distance from $O$ to $P$ is equal to $<font color='#FE8080'>k</font>$ , what is the radius of the circle, in terms of $<font color='#FE8080'>k</font>$ ?
Magoosh	If the average (arithmetic mean) of a and b is j, and the average of c, d, and e is k, what is the average of a, b, c, d, e and j ?
Ready4	If $<font color='#FE8080'>k</font>$ is an integer greater than 6, then all of the following must be divisible by 3 EXCEPT
Ready4	The owner of a store bought $n$ books for $x$ dollars each. She gave away $<font color='#FE8080'>k</font>$ books as part of a promotion and sold the rest for $y$ dollars each. Which of the following represents the profit that the store owner received on the sale of the books?
Manhattan	If k and y are integers, and 10k + y is odd, which of the following must be true?
OG15 OG16 OG17 OG18 OG19 OG20 OG2022	Bengal-born writer, philosopher, and educator Rabindranath Tagore had the greatest admiration for Mohandas K. Gandhi the person and also as a politician, but Tagore had been skeptical of Gandhi's form of nationalism and his conservative opinions about India's cultural traditions.
Ready4	For the positive numbers, $k$ , $k + 1$ , $k - 2$ , $k + 3$ , what is the ratio of the mean to the median?
PREP07 Test 2	If a certain wheel turns at a constant rate of x revolutions per minute, how many revolutions will the wheel make in k seconds?
	If the integer k is a multiple of 3, which of the following is also a multiple of 3 ?
Magoosh	If k is an odd integer, which of the following must be an even integer?
	A certain liquid leaks out of a container at the rate of k liters for every x hours. If the liquid costs $6 per liter, what is the cost, in dollars, of the amount of the liquid that will leak out in y hours?
Magoosh	A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?
	A rectangular circuit board is designed to have width w inches, perimeter p inches, and area k square Inches. Which of the following equations must be true?
Magoosh	If $$ k \neq 0$$ and $$k \neq±1$$, and $$({k^{3}kk^{4}})^{2}\over{k^{n}*k}$$=$$k^{14} $$, then n =