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primary 5 | Maths
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Dan
Dan

primary 5 chevron_right Maths chevron_right Singapore

It would be helpful to understand the working of how the answer is derived

Date Posted: 5 years ago
Views: 365

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LIONEL LIM
Lionel Lim's answer
131 answers (Tutor Details)
1st
In essence, for 1 room, number of worker is inversely proportional to number of days. For 1 room, if worker increase, days decrease. If worker decrease, days increase.
For room and the number of days, they are directly proportional. More room, more days to paint. Less room, less days to paint.
Hope you understand! Good luck!