Subject
Quantitative Aptitude
Topic
Average
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:
If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:
ক)
53.33খ)
54.68গ)
55ঘ)
None of theseExplanation
Required average = ((55 x 50) + (60 x 55) + (45 x 60))/(50+60+45) =(2750 + 3300 + 2700)/160 = 8750/160 = 54.68Related questions
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