SAT Math Practice Test 1

2 (two) If x+y = -2, then x+y+4 = what? 15 (fifteen) If 3/5 the perimeter of an equilateral triangle is 9, what is its perimeter? 1.5 (1 1/2) Water flows into a 60-liter tank and fills one fourth of the tank in 10 minutes. What is the rate of flow in liters per minute? $1.12 In a restaurant where the sales tax on a $5.00 lunch is $.40, what will be the sales tax due on a $14.00 dinner? 2 (two) If the average of two numbers is 5 and the product of the two numbers is 24, then what is the positive difference of the numbers? D If x is an even integer and y is an odd integer, which of the following could be an even integer? A: x+y B: x-y C: x+y/2 D: x/2+y E: x/2+y/2 1/5 If 5x = √36 - √25, then x = what? A If a and b are integers and if 2a-b a+b, which of the following must be true? A: a2b B: b0 C: a2b D: a=b E: a0 4 If (3⁴)(2⁶) = 4(6ⁿ), then n = what? E If x is added to y and this sum is divided by the difference of y and x, the result is which of the following? A: 0 B: -1 C: 1 D: x+y/x-y E: x+y/y-x 40 In a crowd, the ratio of girls to boys is 4 to 3. When 4 girls leave, the ratio of girls to boys becomes 6 to 5. How many girls are in the crowd? D ((N-1)(N-3)(N-5)(N-7)-1) /2 is an integer if N is equal to which of the following? A: 2 only B: 3 only C: 8 only D: any even integer E: any odd integer 2 The surface area of a cube with edge 2 is how many times the surface area of a cube with edge √2 ? D If a+b = c, which of the following is(are) true? I: (a+b)+c = a+(b+c) II: 3a+3b = 3c