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primary 6 | Maths | Algebra
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Ryan
Ryan

primary 6 chevron_right Maths chevron_right Algebra chevron_right Singapore

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Date Posted: 2 years ago
Views: 341
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AC Lim
AC Lim
2 years ago
Lilian = 2u
Siti = 2u - k
Janet = 1u

Total = 165
5u - k = 165
5u = 165+k
u = 33 + k/5
2u = 66 + 2k/5
Siti = 66 + 2k/5 - k
Siti = 66 - 3k/5

If k=8
Siti = 66 - (3×8)÷5 = $61.20

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AC Lim
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