Answer: only true statement is ---The number of questions Brian got right is 14 more than 1/4 the number of questions Chris got right
Step-by-step explanation:
Let Brain and Damien both scored x while Chris scored y then
According to the first relation
where x and y are less than or equal to 20 .
For y=20 , x=19 possible value
According to the second relation
where x and y are less than or equal to 20 .
For y=20 , x= 23 not possible
so only true statement is ---The number of questions Brian got right is 14 more than 1/4 the number of questions Chris got right