In the table, production and sale (in 1000 tons) of a certain product of a company over 5 years s=is given.  Study the table and answer the question.

Ratio of gap of production and sale of a company in year 215 to year 2019 is?

5 : 4

In 2015 → 

Production = 1250

Sale = 1000

Difference = 1250 - 1000 = 250

In 2019 → 

Production = 1600

Sale = 1400

Difference = 1600 - 1400 = 200

Ratio → 250  :  200

              5    :    4