Answer:
Profit = £28.2
Step-by-step explanation:
Price of ingredients for 12 brownies:
1. 150g of flour = x
1500g of flour = £1.30 (recall 1 kg = 1 g * 1000)
→150 = x
1500 = 1.3
cross multiply
1.3 * 150 = 1500 * x
divide both sides by 1500 to make x subject formula
1.3 * (150/1500) = x
1.3/10 = x
x = 0.13
Therefore the price of 150g of flour is £0.13
2. 250g chocolate spread = £1.30
3. 3 eggs = £0.55
The total price to make 12 brownies is £0.13 + £1.30 + £0.55 = £1.98
She sells the brownies for £(120*0.40) = £48
The total cost to make 120 brownies = cost of 12 brownies * 10 = £19.8
Profit = selling price of 120 brownies - cost price of 120 brownies
Profit = £48 - £19.8 = £28.2
