GRE
Exam
Numerical Ability
Algebra
If 0.25(x-y)= -2 and y²-x²=48, then sum of x and y is
Read Solution (Total 1)
x-y=-2/.25=-8
(y+x)(y-x)=48
(y+x)*8=48
y+x=48/8=6
5 years ago
Helpfull: Yes(0) No(0)
GRE Other Question
In the following correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?
5A
BC
-----
D43
Integers a and b are consecutive multiples of 6. Integers x and y are consecutive multiples of 8. In terms of a, b, x and y, what is the ratio of the average of a and b and the average of x and y ?