Test Free Sample Questions

Explanation:
Translate piece by piece into numbers. R (Roy) = E (Erik) + 4. The second equation: R = I (Iris) + 2.
The third equation: R +7 = 2(E + 7). We have three equations with three variables.
Roy is 6, Iris is 4 and Erik is 2. In four years Erik would be 6 and Iris 8, the answer is 48.

Explanation:
Principal × percent interest × time = interest earned Principal × (0.09) × 1/12 = $228.
Solve to find the principal (228 × 12) / 0.09= $30,400.

Explanation:
The first expression is even and the second is odd, the only difference between the expressions is that the first expression has X and the second has W. So, if X is even W must be odd.

Explanation:
3Q is a prime number so it can be divide equally by 3Q, by 1 and by the components 3 and Q. The smallest number therefore is 3.

D

Explanation:
The price of the ticket is unknown. It would be most convenient to plug in 100 as the price of the ticket.
A 30% discount of 100 is $30, that amount remained the same after the price of a ticket increasedby 50%.
The new price of a ticket is $150, so 30/150 is 20%.

Explanation:
From the grade 40 at the end of the first year we learn that his age is 20.
At the end of the second year, he will be 21 and his grade will be 21 × 2 + 1/2 × 40 = 62.
At the end of the third year, he will be 22 and his grade will be 22 × 2 + 1/2 × 62 = 75.

Explanation: Factorize C:
C = A × A × A: C can be equally divided into 1, A, A2, and A3 = C is 4 numbers total.

Explanation:
Test Prep GMAT Test Exam
7
Find the factors of (405)4 and see what the largest value of X can be.
405 = 81 × 5 = 9 × 9 × 5 = 3 × 3 × 3 × 3 × 5
(405)4 = (3 × 3 × 3 × 3 × 5)4 = 316 × 54.
The largest possible value of 3X that is still a factor of (405)4 is the largest possible value of X and that is 316.
X = 16.

Explanation:
Answer (N + 1) (N + 2) is a multiplication of two consecutive numbers, therefore one of them must be even, and an even number multiplied by a different number is an even number.