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primary 6 | Maths
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Date Posted: 3 years ago
Views: 174
snell
Snell
3 years ago
nos.
total = 75
a: 1u
sc: 3u
c: 75-4u


cost
a: 12u
sc: 15u
c: (75-4u) . 8 = 600 - 32u


600 - 5u = 535
1u = 65/5 = 13



(a)
23 child tickets


(b)
nos
a: 13
sc: 39
c: 23


online
nos
a: 13
sc: 39
c: 23-13/2 = 23-6 =17


cost
a: 13 . 12 = 156
sc: 39 . 5 = 195
c: 17 . 8 = 136
total = $487



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