Question 484340
Test scores. Pam scored 78 on a test that had 4 fill-in questions worth 7 points each and 24 multiple-choice questions worth 3 points each. She had one fill-in question wrong. How many multiple-choice questions did Pam get right? 

---- 
Let "x" be the number of correct multi-choice questions)
78 = 3*7 + 3x
3x = 78-21
3x = 57
x = 19 (# of correct multiple-choice questions)
-------------
Cheers,
Stan H.
=============