Assumption: cost + savings = income
3 * income - 3 * cost = 3 * ( cost + savings ) - 3 * cost = 3 savings
Is my assumption wrong? Otherwise it's 3x and not 5x.
3 * income - 3 * cost = 3 * ( cost + savings ) - 3 * cost = 3 savings
Is my assumption wrong? Otherwise it's 3x and not 5x.