Hi i need help with this qns cas i cant seem to get a solution

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secondary 3 | E Maths
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secondary 3 E Maths Singapore

Hi i need help with this qns cas i cant seem to get a solution

Date Posted: 5 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Correct?

Date Posted: 5 years ago

Lynn

5 years ago

Can i ask how u got 20 and 40 for green and blue