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primary 5 | Maths
| Fractions
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please help me for this qustion 5. Thx
C+D: 3u
total: 4u
T + 24 = D
D - T = 24
T + 24 = D
1u + 24 = D
D = 1u + 24
C+D - T = 3u - 1u = 2u
C + 24 = 2u
C = 2u - 24
T+D = 1u + 1u + 24 = 2u + 24
2 . (2u + 24) = 5 . (2u - 24)
4u + 48 = 10u - 120
1u = 28
total cost $112
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