Question

Write a formula for the cost in pence C, of n apples at y pence each.

Use your formula to work out the cost of 6 apples at 9p each.

Answer 1

54 pence

Explanation:

Definition of the given variables:

• c = total cost (in pence).
• n = number of apples.
• y = cost per apple (in pence).

Therefore, the formula using the defined variables is:

`\large\boxed{c=ny}`

Given values:

• n = 6
• y = 9p

Substitute the given values into the derived formula and solve for c:

`\implies c=6 * 9`

`\implies c=54`

Therefore, the total cost of 6 apples at 9 pence each is 54 pence.

Answer 2

Formula for the cost in pence C, of n apples at y pence each

• C = ny

Cost of 6 apples at 9p each

• C = 6*9 = 54 p