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primary 5 Maths Singapore

Hi , I need help with this question. Not sure how to best go about solving it at all. Thanks.

Date Posted: 2 months ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Hope this helps

Date Posted: 2 months ago

Wil

2 months ago

Thank you! Can I ask why when A is shortest, it must be below the average?

AC Lim

2 months ago

If A is above average, mean all 3 will be more than 154, so you will not getting average as 154.