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Question
primary 5 | Maths
| Fractions
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tysmm
total: 1u
at first
total: 5u
after give
total: 5u - 143
after lost
total: (5u - 143)/4 x 3 = 15u/4 - 429/4
15u/4 - 429/4 = 1u
1u = 39
in the end, 39 marbles left
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