Gina and Tina's average grade is 23 points higher than Tina's grade. What is the difference between their grades?
Choose the correct choice from the following.
A) 46.  B) 23.  C) 16.  D) 15  E) 11.5
Given: Gina and Tina's average grade is 23 points higher than Tina's grade   Then we can write it ( G + T ) / 2 = 23 + T.   =&gt; ( G + T ) = 46 + 2T.   G - T = 46.   46.nswer 46. is correct option
<result>A</result>
Gina and Tina's average grade is 23 points higher than Tina's grade. What is the difference between their grades?