(b) Mr Cooke takes his children out for lunch. The list below shows the food they order. When he pays the bill, Mr Cooke uses this special offer. Buy any 4 burgers and get the 2 cheapest free Estimate the total amount of Mr Cooke's bill. Give your answer correct to the nearest pound. You must show all your working. [ 8.99+7.25+8.99+6.30=31.53 ( for ) 4 ( different types ) ( burgus ) ( cheapat ) 6.30+7.25=13.55 31.53-13.55=1798 6.30 times 4=25.20 -12.60=12.60 ]

## Step1:<br />Let's start solving this problem by first identifying all prices of the items.<br /><br />## Step2:<br />Since this special 'Buy any 4 burgers and get the 2 cheapest free' offer is employed, we have to compute the total price for the four burgers and subtract the price of the two cheapest burgers.<br /><br />## Step3:<br />The burgers include: 1 Mega Burger (£8.99), 1 Vegan Burger (£7.25), 1 Chicken Burger (£8.99), and 1 Regular Burger (£6.30). <br /><br />### The total price for these 4 burgers is: \( £8.99 + £7.25 + £8.99 + £6.30 = 31.53 \) <br /><br />## Step4:<br />Upon observing closely, it's clear that the two cheapest burgers are the Vegan Burger for £7.25 and the Regular Burger for £6.30. <br /><br />### For these for the two burgers the price is: \( £7.25 + £6.30 = £13.55 \)<br /><br />## Step5:<br />It is time to deduce the price for the two hamburger with less cost from the total price for all four burgers. According to the special offer, these two cheaper burgers are free.<br /><br />### Use the equation, \( £31.53 - £13.55 = £17.98 \), to determine the cost for 4 different burgers under the special offer.<br /> <br />## Step6:<br />Simultaneously, to comprehend the expected price Mr Cooke has to ultimately pay, we need to take two other menu items into consideration: <br /><br />- The Fish Pie at \( £9.90 \) <br /><br />- The Vegetarian Lasagne at \( £6.80 \)