Kan Ken Yat Rowan's answer to Starlight's Primary 5 Maths Rate & Ratio Singapore question.
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Make them of equal distance of both streets to get 1 unit...so that you can find the difference in 1 unit.
Then divide total differences with "difference in 1 unit".. To get total units
Multiply "lamps in each unit" to the "total number of units" and add them up to get answer.
Then divide total differences with "difference in 1 unit".. To get total units
Multiply "lamps in each unit" to the "total number of units" and add them up to get answer.
Date Posted:
5 years ago
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