-5x+ 8y = 10
-4x+ y = -19

a) 97

b) 38.9

Step-by-step explanation:

a) add all of the numbers from the aptitude test together and then divide that number by the number of scores recorded, so it would be 777/8 which equals 97

b) add all of the numbers from the personality test together and then divide that by the number of scores recorded, so it would be 311/8 which equals 38.9

i hope this helps.