Mathematics Knowledge Practice Question Answers
1. Crew One would achieve 8 miles in the forty minute period. This is determined by dividing 40 by 5, which yields 8. Crew Two achieves only 5 miles since dividing 40 by 8 yields 5 as the result. The answer is obtained from subtracting the distance Crew Two achieved from the distance achieved by Crew One, or three miles.
2. The correct answer is "d." The reasoning to use here is that the man still needs to complete 2/3 of his driveway. Since it took him 2 ½ gallons of sealant to complete 1/3 of his driveway, the other 2/3 of it can be covered if he purchases an additional 2 times that amount. To determine the amount of sealant needed, multiply 2 x 2 ½ gallons. This means that five additional gallons of sealant needed.
3. The best way to solve this problem is to use the Pythagorean Theorem. The formula states that you can add the squared length of the two known sides adjacent to the right angle and that will give you length squared of the third side opposite the right angle, also called the hypotenuse. Option "b" is correct. The formula for the Pythagorean Theorem is expressed as A2 + B2 = C2
4. The correct answer is "b," an inch per hour. The pool fills at the rate of 2 feet per day, a figure obtained by dividing 14 feet by 7 days. The answer must be in inches, so you must convert 2 feet to 24 inches. Since there are 24 hours in a day, the pool is filling at an average rate of 1 inch per hour.
