Concept:Profit sharing ratio is based on each partner's total capital contribution, expressed in simplest whole-number form.Explanation:First, find Timo's total contribution.Timo: ₦12,000+₦18,000+₦70,000=₦100,000.Next, find Chris's total contribution.Chris: ₦10,000+₦105,000+₦35,000=₦150,000.The capital ratio is therefore ₦100,000:₦150,000.Divide both figures by their common factor, 50,000.This gives 100,000÷50,000=2 and 150,000÷50,000=3.So the profit sharing ratio is 2:3.Answer:A. 2:3