## Search found 10 matches

#### Thor just filled his truck's gas tank with 20 gallons of a m

##### Thor just filled his truck's gas tank with 20 gallons of a m

Thor just filled his truck's gas tank with 20 gallons of a mixture consisting of 10% additive and 90% gasoline. If his truck runs best on a mixture consisting of 20% additive and 80% gasoline, how many gallons of additive must he add into the gas tank for his truck to achieve optimum performance? a)...

by DivyaD

Fri Jan 18, 2019 4:24 am
Forum: GMAT Math
Topic: Thor just filled his truck's gas tank with 20 gallons of a m
Replies: 3
Views: 1929

#### Does (a â€“ 2)(b + 4) = 8?

##### Does (a â€“ 2)(b + 4) = 8?

Does (a â€“ 2)(b + 4) = 8?
(1) ab = 2b â€“ 4a
(2) a = 6

by DivyaD

Fri Jan 18, 2019 4:21 am
Forum: GMAT Math
Topic: Does (a â€“ 2)(b + 4) = 8?
Replies: 2
Views: 1733

#### Each number in each of lists L and M above is positive.

##### Each number in each of lists L and M above is positive.

List L: r, s, t, u, v List M: w, x, y, z Each number in each of lists L and M above is positive. The ratio of the average (arithmetic mean) of the numbers in list L to the average of the numbers in list M is 3 to 7. What is the ratio of the average of all the numbers in both lists L and M to the ave...

by DivyaD

Fri Jan 18, 2019 4:20 am
Forum: GMAT Math
Topic: Each number in each of lists L and M above is positive.
Replies: 2
Views: 1842

#### If x is an integer greater than 2, the function f(x)

##### If x is an integer greater than 2, the function f(x)

If x is an integer greater than 2, the function f(x) represents the product of all even integers between 2 and x, inclusive. What is f(51) â€“f(50)?

a) (51)50!
b) (502)49!
c) 50
d) 1
e) 0

by DivyaD

Fri Jan 18, 2019 4:17 am
Forum: GMAT Math
Topic: If x is an integer greater than 2, the function f(x)
Replies: 5
Views: 13435

#### is x > 0?

##### is x > 0?

Is x > 0 ?
(1) x â€“ y > â€“8
(2) x + y = â€“8

by DivyaD

Fri Jan 18, 2019 4:15 am
Forum: GMAT Math
Topic: is x > 0?
Replies: 3
Views: 1763

#### If x and y are consecutive integers such that x < y and x

##### If x and y are consecutive integers such that x < y and x

If x and y are consecutive integers such that x < y and x is odd, which of the following must be true?
I. xy â€“ y is odd.
II. x(x + y) is even.
III. x2 + y2 is odd.

a) None
b) III only
c) I and II
d) I and III
e) II and III

by DivyaD

Fri Jan 18, 2019 4:14 am
Forum: GMAT Math
Topic: If x and y are consecutive integers such that x < y and x
Replies: 3
Views: 1812

#### A fair die has sides labeled with 1, 2, 3, 4, 5, and 6 dots.

##### A fair die has sides labeled with 1, 2, 3, 4, 5, and 6 dots.

A fair die has sides labeled with 1, 2, 3, 4, 5, and 6 dots. If the die is rolled 4 times, what is the probability that on at least one roll, the die will show a 6?

a) $$\frac{1}{6}$$
b) $$\frac{625}{1296}$$
c) $$\frac{649}{1296}$$
c) $$\frac{671}{1296}$$
d) $$\frac{2}{3}$$

by DivyaD

Fri Jan 18, 2019 4:11 am
Forum: GMAT Math
Topic: A fair die has sides labeled with 1, 2, 3, 4, 5, and 6 dots.
Replies: 2
Views: 1665

#### If $$\sqrt{x}\$$ and $$\sqrt{y}$$ are nonzero

##### If $$\sqrt{x}\$$ and $$\sqrt{y}$$ are nonzero

If $$\sqrt{x}\$$ and $$\sqrt{y}$$ are nonzero integers, what is the remainder when x is divided by y?
(1) $$\sqrt{x}\ -\ \sqrt{y}$$ = 1
(2) xâ€“y is a positive integer.

by DivyaD

Fri Jan 18, 2019 4:07 am
Forum: GMAT Math
Topic: If $$\sqrt{x}\$$ and $$\sqrt{y}$$ are nonzero
Replies: 2
Views: 1642

#### A certain furniture store must choose between trucking

##### A certain furniture store must choose between trucking

A certain furniture store must choose between trucking companies A and B for its local deliveries. If company A charges per delivery, and company B charges per week plus a mileage charge, which company would cost the store less? (1) Company A charges $45 per delivery and company B charges$600 per w...

by DivyaD

Fri Jan 18, 2019 4:02 am
Forum: GMAT Math
Topic: A certain furniture store must choose between trucking
Replies: 2
Views: 2420

#### What is the average (arithmetic mean) of x, y, and z?

##### What is the average (arithmetic mean) of x, y, and z?

What is the average (arithmetic mean) of x, y, and z?

(1) â€”x âˆ’ 4y + 3z = 14

(2) 5x + 8y + z = 26

by DivyaD

Fri Jan 18, 2019 4:00 am
Forum: GMAT Math
Topic: What is the average (arithmetic mean) of x, y, and z?
Replies: 3
Views: 2262