bigboy43
05.07.2020 •
Mathematics
Zwelibanzi and Jessica are friends. Zwelibanzi takes Jessica’s civil technology test paper and will not tell her what her mark is. He knows Jessica dislikes word problems so he decides to tease her. Zwelibanzi says: : I have 12 marks more than you do and the sum of both our marks are equal to 148. What are our marks?
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Ответ:
80 and 68
Step-by-step explanation:
Jessica's marks = x
Zwelibanzi's marks = y
We get following equations as per given:
y - x = 12y + x = 148Sum up the two equations to substitute x:
2y = 12+1482y = 160y = 160/2y = 80And finding the value of x:
x = y -12x = 80 -12x = 68Marks are: 80 and 68
Ответ:
The Answer On Edge Is A.), Have Fun Dreamers!
Step-by-step explanation: