Final answer:
To find out how much Sue's mother spent altogether, we multiply the quantity of each item by its unit price and add the results to get a total of $9.68.
Step-by-step explanation:
To calculate the total money spent by Sue's mother on lemons, mutton, and milk, we must multiply the quantity of each item by its price and then sum the totals.
- Lemons: 5 lemons × $0.25 each = $1.25
- Mutton: 0.5kg × $8.36 per kg = $4.18
- Milk: 5 (since 2.5 liters is 5 times the 1/2 liter price) × $0.85 per 1/2 liter = $4.25
Now, we add up the amounts spent on each item to get the total expenditure:
$1.25 (lemons) + $4.18 (mutton) + $4.25 (milk) = $9.68
Therefore, Sue's mother spent a total of $9.68 on her purchases.