Production of E type cars in 1996 = (100 ? 80)% of 450000
Production of E type cars in 1996 = 20% of 450000 = 90000
And in 1997 = 10% of 520000 = 52000
? Total production = 90000 + 52000 = 142000.
? Required number of cars = 15% of 142000 = 21300
Production of C type cars in 1996 = (70 ? 40)% of 450000
Production of C type cars in 1996 = 30% of 450000 = 135000
Production of C type cars in 1997 = (65 ? 40)% of 520000
Production of C type cars in 1997 = 25% of 520000 = 130000
? Required difference = 5000.
According to question ,
Total number of students in school = 400 students
Ratio of boys and girls in school = 3 : 5
Let us assume the ration is P.
Number of boys = 3P
Number of girls = 5P
3P + 5P = 400
8P = 400
P = 50
Number of boys = 3P = 3 x 50 =150
Number of girls = 5P = 5 x 50 = 250
According to question ,
The total number of students speaking English
= 79 + 225 = 304
Given : -
According to question ,
Total number of students in school = 400 students
Ratio of boys and girls in school = 3 : 5
Let us assume the ration is P.
Number of boys = 3P
Number of girls = 5P
3P + 5P = 400
8P = 400
P = 50
Number of boys = 3P = 3 x 50 =150
Number of girls = 5P = 5 x 50 = 250
% of the boys speak only Hindi = 12%
According to question ,
The total number of boys speaking Hindi
= 12% × Number of boys + six times the number of boys speaking only Hindi
?18 + 108 = 126
Clearly, by visual inspection D is the desired option.
Percentage production of B type cars in 1997 = that in 1996 (given)
= (40 ? 15) 25% of 520000 = 130000.
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