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primary 6 | Maths | Percentage
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primary 6 chevron_right Maths chevron_right Percentage chevron_right Singapore

Please help me with this question

Date Posted: 2 months ago
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Venuraam's answer
5 answers (Tutor Details)
When I did equation 4 divided by equation 5, x will be divided by x and it's equals to 1. I didn't reflect it in the solution. Just take note of that.

So from the first equation, you can see that we have 3 unknowns:

1. Cost of key chain represented by k
2. Cost of mug represented by m
3. Quantity bought represented by x