Which years show increase in all the categories simultaneously, that is total sales, gross profit and net profit as compared to the previous year?

From above table , we can see that
The number of cars sold was maximum for White-C Colour-model combination of car in Metro M , which is 90 .
Hence answer will be White-C .

From above table ,
Number of blue-colour cars of model 'C' sold in Metro M = 50000
Number of red colour cars of model 'F' sold in Metro H = 34000
Required difference = Number of blue-colour cars of model 'C' sold in Metro M ? Number of red colour cars of model 'F' sold in Metro H
= ( 50000 ? 34000 )= 16000.

From above given table , we can see that
Since the minimum difference between the white-coloured cars sold is ( 81 - 80 ) = 1 in B type model.
Hence the correct option is E .

As per given above table , we have
Required difference = Total Sales ? Gross Profit
In 1990 ,
= 351.6 ? 155.5 = 196.1;
In 1991 ,
= 407.9 ? 134.3 = 273.6
In 1992
= 380.1 ? 149.9 = 230.2;
In 1993 ,
= 439.7 ? 160.5 = 279.2
In 1994 ,
= 485.9 ? 203.3 = 282.6
Hence required answer will be 1990 .

From above given table , we can see that
from year 1989 to 1994 ,( P + Q ) :
In 1989 = 8 + 16 = 24 ,
In 1990 = 20 + 10 = 30 ,
In 1991 = 16 + 14 = 30 ,
In 1992 = 17 + 12 = 29 ,
In 1993 = 21 + 12 = 33 ,
In 1994 = 6 + 14 = 20
simillary , ( R + S ) :
In 1989 = 21 + 4 = 25 ,
In 1990 = 17 + 6 = 23 ,
In 1991 = 16 + 10 = 26 ,
In 1992 = 15 + 16 = 31 ,
In 1993 = 13 + 20 = 33 ,
In 1994 = 8 + 31 = 39
Hence, In 1993 year , the total production of cars of types P and Q together will be equal to the total production of cars of types R and S together