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that.indie.kidd
That.indie.kidd

Primary 4 chevron_right Maths chevron_right Singapore

Please help me as i dont understand ;( i would appreciate it . Click on the pic to see the question as its not clear from th outsidee

Date Posted: 3 years ago
Views: 293

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Nicholas TYY
Nicholas Tyy's answer
20 answers (Tutor Details)
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Hope this helps :)
that.indie.kidd
That.indie.kidd
3 years ago
thank u but how did he get 80 ?
Nicholas TYY
Nicholas TYY
3 years ago
(Refer to model) Initially he had 5 blocks of blue pens and 1 block of red pens. After giving away a certain amount of red pens he had 1 unit worth of red pens and 7 units worth of blue pens. If u see the model, each block is equivalent to 7 units. So there’s a total of 42 units, and from there u can find 1 unit, which is basically the number of red pens he had left
Nicholas TYY
Nicholas TYY
3 years ago
If ure wondering how I got 5 blocks and 1 block, it’s because the question said that 1/6 of the pens are blue and 5/6 are red. Same concept used for the units :). 1/8 of the pens remaining are red and 7/8 of are blue.
Nicholas TYY
Nicholas TYY
3 years ago
The shaded area represents the number of pens that he sold
that.indie.kidd
That.indie.kidd
3 years ago
hi nicholas ! could u pls answer my recent question . please , it would help me . thanks