Answer:
$18.00
Explanation:
To find the total cost of fruit, start by calculating the total cost of each type of fruit. To calculate the total cost for a type of fruit, multiply the fruit's cost per pound by the number of pounds purchased. 
 
Calculate the total cost of the mangoes. 
$0.80 per pound × 2 pounds = $1.60 
 
Calculate the total cost of the strawberries. 
$1.60 per pound × 0.5 pound = $0.80 
 
Calculate the total cost of the guavas. 
$5.20 per pound × 3 pounds = $15.60 
 
Now, add these three totals. 
$1.60 + $0.80 + $15.60 = $18.00 
 
So, the total cost of the fruit is $18.00.