A manufacturing company prices its product to give a mark-up of 100% on variable cost. If the selling price is increased by 50%, quantity sold is expected to be reduced by 40% but the variable cost per unit is expected to remain unchanged. What will be the effect on Revenue and Total Contribution respectively?

AJO Co uses marginal costing and the following information relates to Product A: Selling price per unit: $250 Direct material cost per unit: $140 Direct labour per unit: $40 Other direct expenses per unit: $10 Variable overheads per unit: $10 In September, 4,000 units of Product A were sold. What was the total contribution earned from the sales of Product A?