Analysis of the graph:

We shall first determine the number of cars of each model produced by the Company during the two years:

**In 2000 :** Total number of cars produced $= 3,50,000$.

$P = (30 - 0)$% of $3,50,000 = 30$% of $3,50,000 = 1,05,000.$

$Q = (45 - 30)$% of $3,50,000 = 15$% of $3,50,000 = 52,500.$

$R = (65 - 45)$% of $3,50,000 = 20$% of $3,50,000 = 70,000.$

$S = (75 - 65)$% of $3,50,000 = 10$% of $3,50,000 = 35,000.$

$T = (90 - 75)$% of $3,50,000 = 15$% of $3,50,000 = 52,500.$

$U = (100 - 90)$% of $3,50,000 = 10$% of $3,50,000 = 35,000.$

**In 2001 :** Total number of cars produced $= 4,40,000.$

$P = (40 - 0)$% of $4,40,000 = 40$% of $4,40,000 = 1,76,000.$

$Q = (60 - 40)$% of $4,40,000 = 20$% of $4,40,000 = 88,000.$

$R = (75 - 60)$% of $4,40,000 = 15$% of $4,40,000 = 66,000.$

$S = (85 - 75)$% of $4,40,000 = 10$% of $4,40,000 = 44,000.$

$T = (95 - 85)$% of $4,40,000 = 10$% of $4,40,000 = 44,000.$

$U = (100 - 95)$% of $4,40,000 = 5$% of $4,40,000 = 22,000.$

Total number of cars of models $P$, $Q$ and $T$ manufacture in 2000

$= (105000 + 52500 + 52500)$

= **2,10,000**