JADE LEE ZI QI's answer to Merlion's Secondary 2 Maths Singapore question.

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JADE LEE ZI QI
Jade Lee Zi Qi's answer
8 answers (Tutor Details)
Inverse Proportion
Or
Calculate total of manned days

Men x days = total manned days
Find days = totalmanned days / men

12 x 20 = 240
240 / 15 = 16
Merlion
Merlion
1 month ago
Thanks for using the 2 methods to explain