A stationery shop orders a batch of pens from a factory.
The factory could make the batch of pens in 20 days
using 12 machines.
Due to a fault, only 3 machines were used for the first 8 days.
All 12 machines were used from dav 9 onwards.
Work out the total number of days taken to make the batch of pens.
The factory could make the batch of pens in 20 days
using 12 machines.
Due to a fault, only 3 machines were used for the first 8 days.
All 12 machines were used from dav 9 onwards.
Work out the total number of days taken to make the batch of pens.