other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Average

The average weight of a group of 30 girls is 40 kg and it was later discovered that one weight was miscalculated as 50 kg instead of 60 kg. The right average weight is:

1

131/9 kg

2

125/7 kg

3

122/5 kg

4

121/3 kg

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