One yard is equal to 36 inches; one square yard is equal to .

Multiply this conversion factor by 13:

, the correct choice.

Since the addition of 250 milliliters of water changes the status of the jar from 40% full to half, or 50%, full, then 250 milliliters is  of the capacity of the jar. Therefore, the jar holds 

 milliliters of water total.

Divide by 1,000 milliliters per liter to convert to liters:

 liters.

The second jar was 10% full and contained  milliliters of water. Therefore, the capacity of the second jar, which is also that of the first, is

 milliliters.

Divide this by the conversion factor of 1,000 to convert to liters:

 liters, the correct response.

Call the capacity of the first jar, in milliliters, ; the capacity of the second jar is therefore twice this, or . 

The first jar is 20% full, so the amount of water in this jar is currently  milliliters. The second jar is 40% full, so it contains  milliliters of water. Therefore, since the total amount of water is 600 milliliters:

The first jar has a capacity of 600 milliliters. It is 20% full, so it has

 milliliters of water, and it can hold 

 milliliters more. Divide by 1,000 milliliters per liter to convert to liters:; this is

 liters.

Since the two jars have the same capacity, which we will call  milliliters, the amount of water in the first and second jars, respectively, are  , and  of , or . The total amount of water is

The capacity of each jar is . The first jar is  full and therefore contains  milliliters of water; it can hold  milliliters more. 

Divide by to convert to liters:

.

For the sake of simplicity, assume that the first jar holds 100 milliliters of water - this reasoning is independent of the actual capacity. The second jar holds 40% more water, which is 

 milliliters capacity.

The first jar is filled to capacity, so it holds 100 milliliters of water. The second jar contains 20% less water, so it contains

 milliliters of water.

The jar is  full.

Let  be the capacity, in liters, of each of the other jars. Since each jar is 25% full, the amount of water in each jar is 25% of , or . The contents of eight such jars will fit in the two-liter jar, so

This means each jar can be at most one liter in capacity.

The contents of nine such jars will not fit, however, so 

This means that each jar must be at least about 0.88 liters in capacity.

The only choice that falls in this range is 0.9 liters, so this is the correct choice.

First, multiply to find the number of flots in a klot.

Cube that to find the number of cubic flots in a cubic klot.

Therefore, 1,685,159 cubic flots = 1 cubic klot

Let  equal the original price.

First discount: (sale price).

Second discount: (final sale price)

Therefore, the final price is 60% of the original price. To calculate the discount:

or 40%

Let  be the price before discount of the merchandise Carolyn can purchase now using her 10% discount. Then Carolyn will pay 90% of that price, or . Set up and solve the equation:

So Carolyn can use that gift card to purchase $500 worth of merchandise now.

Now let  be the price before discount of the merchandise Carolyn can purchase during Employee Appreciation Day using a 25% discount. Then Carolyn will pay 75% of that price, or . Set up and solve the equation:

So Carolyn can use that gift card to purchase $600 worth of merchandise on Employee Appreciation Day.

Carolyn can save $100 by holding out.