Answer:
Step-by-step explanation:
Call mango as x, peach as y and watermelon as z
The expression of the total cost for 2 peaches, 5 mangoes and 3 watermelons is : 5x + 2y + 3z
The total cost is : 2 x 0.79 + 5 x 1.89 + 3 x 3.25 = 1.58 + 9.45 + 9.75 = 20.78