Car A drives East at 20 kph at half an hour earlier than car B that started at the same point at 50 kph. How long will car B overtake car A, in minutes?
| A. 25 | C. 20 |
| B. 30 | D. 15 |
If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?
| A. 20:00 | C. 21:00 |
| B. 20:30 | D. 21:30 |
Solve for C from
$$\dfrac{6x^2 + x - 37}{(x - 3)(x + 2)(x - 1)} = \dfrac{A}{x - 3} + \dfrac{B}{x + 2} + \dfrac{C}{x - 1}$$
| A. 2 | C. 4 |
| B. 3 | D. 5 |
Find d so that x + 6 is a factor of x4 + 4x3 - 21x2 + dx + 108.
| A. +48 | C. -24 |
| B. +32 | D. -36 |
A student in a chemistry laboratory wants to form a 32-milliliter mixture of two solutions to contain 30% acid. Solution A contains 42% acid and solution B contains 18% acid. How many milliliters of each solution must be used?
| A. A = 16, B = 16 | C. A = 14, B = 18 |
| B. A = 10, B = 22 | D. A = 15, B = 17 |
If 1/4 of a mixture of rice and corn was replaced by corn alone, the resulting mixture becomes 55% corn. What was the percentage of corn in the original mixture?
| A. 30% | C. 40% |
| B. 35% | D. 25% |
Three boys and two girls are to be picked from a class of 15 in which 9 are girls. How many ways can this be done?
| A. 56 | C. 3,003 |
| B. 99 | D. 720 |
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(x+2y-1)dx-(x+2y-5)dy=0
y(x^2+y^2)dx+x(3x^2-5y^2)dy=0 x=2 , y=1
