The number of questions that Alex got right would be = 12.
How to determine the number of questions gotten right?
To calculate the questions that where gotten right by Alex, the following steps should be taken as follows:
The total number of questions = 15
The percentage of questions gotten right = 80%
The total number of questions gotten right = x
That is;
if 15 = 100%
x = 80%
make x the subject of formula;
x = 15×80/100
= 1200/100
= 12
Therefore, the number of questions that Alex got right after converting percentage to normal figure would be= 12.