GMAT Quantitative Reasoning Practice Test 4

Question : 93 of 100

Marks: +1, -0

Gina and Tina's average grade is 23 points higher than Tina's grade. What is the difference between their grades?

Solution:

Define

T

as Tina's grade and

G

as Gina's grade.
Write the equation,

T+23=(G+T) {/} 2

\;2 T+46=G+T

\;T+46=G

\;G-T=46 .

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