2 sandwiches and 3 croissants costs £11. 3 sandwiches and 6 croissants costs £19.50.
Find the cost of a sandwich.
Find the cost of a croissant.

The price of a sandwich is £2.5 and the price of a croissant is £2

Step-by-step explanation:

Let s be the number of sandwiches and c be the number of croissants

Then according to given statements the equations will be:

Multiplying equation 1 by 2 and subtracting equation 2 from the new equation

Now

Putting s=2.5 in equation 1

Hence,

The price of a sandwich is £2.5 and the price of a croissant is £2

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)