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primary 6 | Maths | Percentage
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SHREYA
SHREYA

primary 6 chevron_right Maths chevron_right Percentage chevron_right Singapore

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Date Posted: 1 week ago
Views: 22
snell
Snell
1 week ago
at first
X: 4u


after X adds 80c
X: 4u+0.80

80% = 4u+0.80
100% = 5u+1.00

after
X: 4u+0.80
S: 5u + 1



after S adds 70c
S: 5u+1 + 0.70 = 5u+1.70

5u + 1.7 = 1.5 x 4u
u = 1.7

at first,
X has $6.80 &
S has $9.50


...

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sstrike
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