CHSL 21 10-06-2022 Shift 1


Question 1

In an examination, the Average marks of 7 children was 20, that of 3 children was 45, that of another 4 children was 15 and that of 2 children was 0. What is the average marks of all the 16 children? (Correct to one decimal place)
एक परीक्षा में 7 बच्चों के औसत अंक 20 थे, 3 बच्चों के औसत अंक 45 थे, 4 बच्चों के औसत अंक 15 थे, और 2 बच्चों के औसत अंक 0 थे। दिए गए सभी 16 बच्चों के औसत अंक ज्ञात कीजिए।

Options

A

4.9

4.9

B

4

4

C

20.9

20.9

D

20

20


Solution:

Correct Answer:

C

20.9

20.9


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