Jeff drives three times farther

Jeff drives three times farther in 36 minutes than what Amy drives in 30 minutes. If Jeff drives at a speed of 40 miles per hour, at what speed, in miles per hour, does Amy drive?

(A) 6
(B) 9
(C) 16
(D) 24
(E) 32

OA C
Pl. help me out to solve this question.

The function f is defined by

The function f is defined by f „(x) =… √x – 20 for all positive numbers x. If p ƒ= f (q) for some positive numbers q and p, what is q in terms of p?

(A) (p +‚ 20)^2
(B) √(p + 20‚)
(C) (√p + 20)^2
(D) √(p^2 +‚ 20)
(E) (p^2 +‚ 20)^2

OA A

Pl. help me out with this question,

For a non-negative integer n,

For a non-negative integer n, if the remainder is 1 when 2^n is divided by 3, then which of the following must be true?

I. n > 0
II. 3^n = ƒ 3^(-n)
III. √(2^n) is an integer.

(A) Only I
(B) Only II
(C) Only III
(D) Only I and III
(E) Only II and III

OA C

If 0 < x < 1 and y > 1, [√{x + y - 2√(xy)} + √{x + y + 2√(xy)}] = (A) √x (B) 2√x (C) √y + √x (D) √y (E) 2√y OA E An efficient approach for such questions is by plugging in smart values for x and y. Since we have to deal with √xy, the values chosen for x and y must be such that...

If w, x, y and z are integers

If w, x, y, and z are integers such that 1 < w ≤ x ≤ y≤ z and w*x*y*z =ƒ 924, then how many possible values exist for z?

(A) Three
(B) Four
(C) Five
(D) Six
(E) Seven

OA D

What is the value of x?

What is the value of x?

(1) |y| <= 3x
(2) |5x - 1| ƒ = x ‚ + 7

OA C

Is n/12 an integer?

Is n/12 an integer?

(1) n^2/144 is an integer.
(2) n/6 is an integer.

OA: C

Need help. N is a two-digit number. The sum of its digits is S and the product of its digits is P. What is the largest possible value of N? (1) N+S=103 (2) 2N=2S+9P OA: D Hello experts, I did not get this one. Pl. help. I did this way... Let the number be N=10x+y; x->tens digit and y-> unit S=x+y a...