Study the following table and answer the questions.

Number of machines (in thousands) sold by dealers A, B, C, D and E during six months of 2022.

The ratio of total no. of machines sold by dealer B in Jan., Apr. and June to the total number of machines sold by dealers A and D in March is?

4 : 3

Sale by B in (Jan. + Apr. + June) = (600 + 580 + 620) = 1800

Sale by (A + D) in March = 628 + 722 = 1350

Required ratio = 1800 : 1350 = 4 : 3