Question 5
A shop sells a new kind of cake. On the first day, it sells $200$ cakes and makes a $20\%$ loss. On the second day, it sells $500$ cakes and makes a profit of $10$ million dong. It makes the same number of cakes each day and discards any unsold cakes. What is the selling price per cake, in thousands of dong?
Assumptions for this calculation: the total daily production cost and the selling price per cake are unchanged, and the $20\%$ loss is measured against production cost.
Assumptions for this calculation: the total daily production cost and the selling price per cake are unchanged, and the $20\%$ loss is measured against production cost.