Average Practice Test 5

Question : 40 of 40

Marks: +1, -0

In a singing competition, 35 students from Gupta School and 28 students from Sharma School participated. It the average age of the participants of the Gupta School is 19 years and that of Sharma School is 22 years, find the average age of all the students from both the schools.

21 years
20 years
19 years
23 years
18 years

Validate

Solution:

Total age of students of Gupta School = (35 × 19) = 565 years
Total age of students of Sharma School = (28 ×22) years = 616 years
∴ Required average

=({665+616}/63)

years = 21 years approximately

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