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primary 6 | Maths
| Measurement
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Date Posted: 5 years ago
Views: 268
p: u
r: u+8
0.7 x u - 0.5 x (u+8) = 1.40
0.2u - 4 = 1.4
u = 27
no. of rulers bought = 27+8 = 35
r: u+8
0.7 x u - 0.5 x (u+8) = 1.40
0.2u - 4 = 1.4
u = 27
no. of rulers bought = 27+8 = 35
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