Tan Yick Loong's answer to Cshjwrk's Primary 6 Maths Measurement Singapore question.
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Kim + Derrick = 3 hrs per person per room
So if they paint 2 rooms, total time = 6 hrs per person = 12 hrs for 2 of them
For one room, Kim = 8 hrs
Therefore, Derrick = 12 - 8 = 4 hrs
So if they paint 2 rooms, total time = 6 hrs per person = 12 hrs for 2 of them
For one room, Kim = 8 hrs
Therefore, Derrick = 12 - 8 = 4 hrs
Date Posted:
4 years ago
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