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primary 6 | Maths | Ratio
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RT
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primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

Hi, please help.

Date Posted: 1 year ago
Views: 230

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Xavier Sng
Xavier Sng's answer
801 answers (A Helpful Person)
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Hope this helps. Regards
RT
RT
1 year ago
Hihi, can explain more as my daughter dont understand why use 18 divide by 2 then minus 1?
Xavier Sng
Xavier Sng
1 year ago
Greetings. There are twice as many big beads as small beads. If each bracelet requires 4 big beads and 2 small beads instead of 3, there would have been 9 small beads left in total (half of the 18 big beads left). Since each bracelet uses 3 small beads, and there is one small bead left, 9-1 = 8 gives you the number of bracelets assembled. Hope this helps.
RT
RT
1 year ago
Thks!
Xavier Sng
Xavier Sng
1 year ago
My pleasure. I am glad your daughter can understand the solution. Guess-and-check is usually the go-to method, but I personally prefer the direct route. Regards