Direct and Inverse Proportion

64%

The cost of printing photos ( $C\,$ pence) is directly proportional to the number of photos printed ( $n$ ).

$C\,$ is given by the formula: $C = 12 n$

Find the number of photos printed if the total cost is 156 pence.

[2]

64%

The cost of printing photos ( $C\,$ pence) is directly proportional to the number of photos printed ( $n$ ).

$C\,$ is given by the formula: $C = 12 n$

Find the number of photos printed if the total cost is 156 pence.

[2]

Direct and Inverse Proportion Questions