May I ask for a solution and explanation to the problem for a better understanding. Thank you! If the sales this year amounted to P500,000, sales this year at last year’s prices is P460,000. The cost...

If the sales this year amounted to P500,000, sales this year at last year’s prices is P460,000. The cost of sales this year is P300,000, and the cost of sales this year at last year’s price is P260,000. How much is the gross profit variation due to sales price factor?