Budget 2015: How do you solve the 'productivity puzzle'?

The Chancellor George Osborne will give his Budget on Wednesday.

His economic priorities are tackling Britain's debt and keeping our economy strong - and he is expected to do this with a combination of further cuts to departmental spending and welfare, and boosting output.

But boosting output is not that easy. Britain does not generate as much as our neighbours - something experts call the "productivity puzzle".

Steph McGovern explains.