A mean average of 60 on seven exams is needed to pass a course. On her first
Question:
A mean average of 60 on seven exams is needed to pass a course. On her first six exams, Sheryl received grades of 52, 72, 80, 65, 57, and 69.
(a) What grade must she receive on her last exam to pass the course?
(b) An average of 70 is needed to get a C in the course. Is it possible for Sheryl to get a C? If so, what grade must she receive on the seventh exam?
(c) If her lowest grade of the exams already taken is to be dropped, what grade must she receive on her last exam to pass the course?
(d) If her lowest grade of the exams already taken is to be dropped, what grade must she receive on her last exam to get a C in the course?
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a For a mean average of 60 on 7 exams she must have a total of 60 x 7 420 points Shery...View the full answer
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Sandhya Sharma
I hold M.Sc and M.Phil degrees in mathematics from CCS University, India and also have a MS degree in information management from Asian institute of technology, Bangkok, Thailand. I have worked at a international school in Bangkok as a IT teacher. Presently, I am working from home as a online Math/Statistics tutor. I have more than 10 years of online tutoring experience. My students have always excelled in their studies.
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Related Book For 
A Survey of Mathematics with Applications
ISBN: 978-0134112107
10th edition
Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde
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