GRE Exam Numerical Ability Arithmetic

The cost of sending a package special delivery is x cents per ounce up to 10 ounces and y cents for each ounce in excess of 10. Which of the following represents the total cost, in cents, of sending special delivery a package weighing w ounces, if w > 10?
(A) x + (w- 10)y +10
(B) x + (w- 10) + y
(C) 10x + 10(w- y )
(D) 10x + y(w- 10)
(E) 10x + wy

Read Solution (Total 2)

GRE Other Question
A certain jar contains 100 jelly beans: 50 white, 30 green, 10 yellow, 5 red, 4 purple, and 1 black. If a jelly bean is to be chosen at random, what is the probability that the jelly bean will be neither purple nor red?
(A) 0.09
(B) 0.11
(C) 0.55
(D) 0.91
(E) 0.96 If 3 is the GCD of +ve integers r, s which of the following could be GCD of 2r, 3s?
option
A. 3
B. 6
C. 9
D. 12
E. 18