How to solve this without using algebra eq? I think this fall on rate subject

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primary 5 Maths Singapore

How to solve this without using algebra eq?

I think this fall on rate subject?

Date Posted: 1 year ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 1 year ago

Antz

1 year ago

thanks!