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This comes from the chapter Algebraic Manipulations in a book for 3rd year secondary school students in Singapore.

Mei Heng appears to be a miracle worker: the longer her shift is, the faster she works. But what if she only wants to work for an hour or two?

SURREAL maths 3

SURREAL 1SURREAL 2SURREAL 3SURREAL 4SURREAL 5
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