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Ray Edmonds and Glen Greencorn would like to lease an office building for their separate accounting offices. The building has a total of 750 square metres of office space. Edmonds requires 400 square metres and Greencorn requires 350 metres. If each rents the space on his own, the cost will be $12.50 per square metre. If they rent the space together, the rent will be $10.50 per square metre.

Determine Edmonds' and Greencorn's respective share of the rent under the stand-alone cost allocation method.