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primary 6 | Maths
| Data Analysis
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The average mass of a group of children is 36 kg. When Mr Wong joins them, the average mass of Mr Wong and the children becomes 38 kg. Mr Wong weighs 64 kg. How many children are there in the group?
Date Posted: 1 year ago
Views: 493
See 1 Answer
64 - 38 = 26
Average difference = 38 - 36 = 2
Therefore,
Number of children = 26 ÷ 2 = 13
Hope this helps ♥
Average difference = 38 - 36 = 2
Therefore,
Number of children = 26 ÷ 2 = 13
Hope this helps ♥
wow that is the most best simplest answer i get. Thanks.
Yeah...
Children average is increased from 36 to 38 kg, so 2 kg increased contribute from Mr Wong.
Mr Wong 64, the average taken 38, balance 26kg distribute to all children each with 2 kg, so 13 children.
Next time think this way... You will get answer faster ★☆.
Children average is increased from 36 to 38 kg, so 2 kg increased contribute from Mr Wong.
Mr Wong 64, the average taken 38, balance 26kg distribute to all children each with 2 kg, so 13 children.
Next time think this way... You will get answer faster ★☆.
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