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primary 6 | Maths | Percentage
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Clarine Peh
Clarine Peh

primary 6 chevron_right Maths chevron_right Percentage chevron_right Singapore

Please help, thank you.

Date Posted: 4 months ago
Views: 23
Henry Tan
Henry Tan
4 months ago
Hi Clarine, key words of this question is “ 18% of them had neither rabbits nor terrapins “ “ 90 of them had neither rabbits nor terrapins “ means 18% —-> 90.
Phylicia Tong
Phylicia Tong
4 months ago
18% no pets.
100 - 18 = 82% have pets
75 + 64 =139% (the excess is due to double counting those who owns rabbits AND terrapins)
139-82 = 57%
18% = 90
57%= 285
Answer should be 285.

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Christmas MT
Christmas Mt's answer
561 answers (A Helpful Person)
1st
If you draw a venn diagram, it is quite straightforward. Summing up those with rabbits (75%) and those with terrapins (64%) wil double-count those who have both rabbits and terrapins.
Clarine Peh
Clarine Peh
4 months ago
Thank you.