Statistics And Probability Question 536
Question: A student obtain 75%, 80% and 85% in three subjects. If the marks of another subject are added, then his average cannot be less than
Options:
A) 60%
B) 65%
C) 80%
D) 90%
Show Answer
Answer:
Correct Answer: A
Solution:
Marks obtained from 3 subjects out of 300 = $ 75+80+85 $ = $ 240 $ If the marks of another subjected is added, then the marks will be $ \ge $ 240 out of 400 \ Minimum average marks $ =\frac{240}{4}=60% $ , [When marks in the fourth subject = 0].
BETA
