Diego is attending UTEP and has completed some courses worth 3 credits and some course worth 4 credits. he has earned a total of
59 credits after completing 18 courses. How many courses worth 4 credits has Diego completed
2 answers:
Answer:
The answer above me
Step-by-step explanation:
Answer:
3 credit course = 13
4 credit course = 5
Step-by-step explanation:
Given that :
Total credits = 59
Total courses = 18
Let :
Number of 3 credit course = x ; number of 4 credit course = y
x + y = 18 - - (1)
3x + 4y = 59 - - - (2)
x = 18 - y
3(18 - y) + 4y = 59
54 - 3y + 4y = 59
54 + y = 59
y = 59 - 54
y = 5
x = 18 - 5
x = 13
3 credit course = 13
4 credit course = 5
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