<p>These are not from the BB, I am taking an SAT prep course somewhere:</p>
<ol>
<li><p>A cubical swimming pool measuring 4 yards by 4 yards by 4 yards is filled to capacity by a hose in ½ hour. How many hours will it take to fill a cubical swimming pool measuring 8 yards by 8 yards by 8 yards to capacity, if it is filled by the same hose with water flowing at the same rate?
A. 1
B. 2
C. 4
D. 8
E. 32</p></li>
<li><p>If x^13 = j and x^12 = 4/9, which of the following is an expression in terms of j?
A. 9/4j
B. 4/9j
C. 4j
D. 9j
E. 13j</p></li>
<li><p>Yolanda walked a distance of 3 miles in 90 minutes. If her speed for the first mile was 6 miles per hour, how many minutes did it take her to walk the rest of the distance?</p></li>
<li><p>A page of a certain book is 12 inches high and 8 inches wide. The top and bottom margins on the page are each 2 inches wide, and the side margins are each 1 inch wide. The area on the page available for printing is what percent of the total area of the page?
A. 30%
B. 35%
C. 40%
D. 45%
E. 50%</p></li>
</ol>
<p>For the first one, each side length is 2x the original. Thus the volume is 8x, and it would take 8x as long.</p>
<p>For the second one, divide the two expressions to obtain x=j/(4/9).</p>
<p>For the third one, figure out how long the first mile took. 6 miles per hour = 10 minute mile. Subtract that and you get 80 minutes for the last two miles.</p>
<p>For the last one, you essentially subtract 2+2 from the height and 1+1 from the width, leaving you with 8x6. 8x6/8x12 = 50%.</p>