GRE Exam Numerical Ability Arithmetic

Twenty children were sharing equally the cost of a present for their teacher. When 4 of the children decided not to contribute, each of the other children had to pay $1.50 more. How much did the present cost ( in $) ?

Read Solution (Total 1)

Let the cost of the present be "x".
Then, 16*(x+1.50) = 20*x => 24 = 4x
x = $6.
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GRE Other Question

In State X, all vehicle license plates have 2 letters from the 26 letters of the alphabet followed by 3 one-digit numbers. How many different license plates can State X have if
repetition of letters and numbers is allowed?
A 630,400 B 670,840 C 650,000 D 608,400 E 676,000 If x + 2y = a and x − 2y = b, which of the following mention expressions is equal to x+y?
A] (3a-b)/2 B] (3a+b)/4 C] (a²−b²)/4 D] (a²−b²)/8