What is the ratio of the average (arithmetic mean) height of students in class X to the average height of students in class Y?
(1) The average height of the students in class X is 120 centimeters.
(2) The average height of the students in class X and class Y combined is 126 centimeters.
Of the students in a certain school, 15 percent are enrolled in an art class and 10 percent are enrolled in a music class. What percent of the students in the school are enrolled in neither an art class nor a music class?
(1) 2/3 of the students who are enrolled in an art class are also enrolled in a music class.
(2) There are more than 100 students in the school.
i thnk the answer will be A.
neither in arts or music=100-15-10-200/3
from question ,x is either-0,5,-2
stat1.x=0,7...suffecient
stat2.x=5,3...suff
So answer is D
If x(x - 5)(x + 2) = 0, is x negative?
(1) x2 7x 0
(2) x2 2x 15 0
PS: x2 = x^2 ;)
If x is an integer, what is the value of x?
(1) -5x > -3x + 10
(2) -11x - 10
If x, y, and z are integers greater than 1, and (3^27)(5^10)(z) = (xy), then what is the value of x?
(1) y is prime
(2) x is prime
If x(x - 5)(x + 2) = 0, is x negative?
(1) x2 7x 0
(2) x2 2x 15 0
PS: x2 = x^2 ;)
If x is an integer, what is the value of x?
(1) -5x > -3x + 10
(2) -11x 10
Imo C
From 1 ) we have
x
and from 2) we have
x>-7
so x=-6
If x, y, and z are integers greater than 1, and (3^27)(5^10)(z) = (xy), then what is the value of x?
(1) y is prime
(2) x is prime
I also marked E, but the OA is option A :lookround:
IMO E.
Here we can simplyfy the equation as
25*z/3*y=x
so from 1 we have y is prime
so we will have different x values for diff values of y
so insuff
from 2 we have x is prime, but we dont know the values of y,z so insuff.
combining both, still we dont have enpugh info to calc the value of x.
If x, y, and z are integers greater than 1, and (3^27)(5^10)(z) = (xy), then what is the value of x?
(1) y is prime
(2) x is prime
nuttyvarun SaysI also marked E, but the OA is option A :lookround:
nuttyvarun SaysI also marked E, but the OA is option A :lookround:
...plz explain Varun??? Wts the source of dis Q???
1)In 2003 Acme Computer priced its computers five times higher than its printers. What is the ratio of its gross revenue for computers and printers respectively in the year 2003?
(1) In the first half of 2003 it sold computers and printers in the ratio of 3:2, respectively, and in the second half in the ratio of 2:1.
(2) It sold each computer for $1000.
24) If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost?
(1) Tom makes 20% less per hour than Jim does.
(2) x + y = $43.75
1)In 2003 Acme Computer priced its computers five times higher than its printers. What is the ratio of its gross revenue for computers and printers respectively in the year 2003?
(1) In the first half of 2003 it sold computers and printers in the ratio of 3:2, respectively, and in the second half in the ratio of 2:1.
(2) It sold each computer for $1000.
24) If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost?
(1) Tom makes 20% less per hour than Jim does.
(2) x + y = $43.75
Solve this
1.what is Jim's annual salary and June's annual salary ?
a)The combined total of the annual salaries of Jim and June is $50,000
b)If Jim were to receive a 10% increase in annual salary and June a 12% increase,their combined annual salaries would be $55,600.
Solve this
1.what is Jim's annual salary and June's annual salary ?
a)The combined total of the annual salaries of Jim and June is $50,000
b)If Jim were to receive a 10% increase in annual salary and June a 12% increase,their combined annual salaries would be $55,600.
pj02 SaysPlease check the problem again : if its xy or x^y.