Answer:
80 and 68
Step-by-step explanation:
Jessica's marks = x
Zwelibanzi's marks = y
We get following equations as per given:
Sum up the two equations to substitute x:
And finding the value of x:
Marks are:80 and 68
a. 4
b.-1
c. 3
Step-by-step explanation:
A is matched with -1 6/8
B is matched with -1 2/8
C is matched with -0.5
D is matched with 1
E is matched with 1 5/8