Final answer:
By creating a system of equations and using the elimination method, we determined that a mince pie costs £0.09, and a jar of cranberry sauce costs £2.27.
Step-by-step explanation:
To find out how much a mince pie and a jar of cranberry sauce cost each, we can set up a system of equations based on the information provided. Let's let x be the cost of one mince pie and y be the cost of one jar of cranberry sauce. The two equations representing the given scenarios are:
- 3x + 2y = £4.80
- 10x + 3y = £7.60
We can solve these equations using the substitution or elimination method. For simplicity, let's use the elimination method:
- Multiply the first equation by 3 to balance the coefficients of y:
(3x + 2y) * 3 = £4.80 * 3, giving us 9x + 6y = £14.40. - You can then subtract the second equation from this new equation:
9x + 6y - (10x + 3y) = £14.40 - £7.60, which simplifies to -x + 3y = £6.80. - Solve for y by dividing by 3:
y = £6.80 / 3, yielding y = £2.27 (rounded to two decimal places). - Substitute the value of y back into the first equation to solve for x:
3x + 2(£2.27) = £4.80, which simplifies to 3x = £4.80 - £4.54, giving x = £0.26/3, thus x = £0.09.
Therefore, a mince pie costs £0.09, and a jar of cranberry sauce costs £2.27.