Directions: Study the following graph carefully & answer the questions given below it.
 
Production of Steel (in lakh tonnes) by different companies
for three consecutive years 2000, 2001, 2002
 
1
How many times minimum production and maximum production in any of the given years is equal to the ratio 2 : 3?
» Explain it
B
The ratio of minimum production to maximum production in different companies are as follows:
 
Comp. Min  Max  Ratio
A  → 40 : 60  ⇒  2 : 3
B  → 40 : 70  ⇒  4 : 7
C  → 30 : 35  ⇒  6 : 7
D  → 40 : 70  ⇒  4 : 7
E  → 80 : 90  ⇒  8 : 9
F  → 30 : 45  ⇒  2 : 3

Only twice minimum production and maximum production have the ratio of 2 : 3.

Hence, option B is correct.
 
2
What is the difference of average production of 2001 & 2002  in lakh tonnes?
» Explain it
B
Average production in the year 2001 –

⇒   60 + 60 + 40 + 80 + 50 + 40
6

 ⇒   330  ⇒ 55.
6

Average production in the year 2002 –

⇒   40 + 70 + 35 + 70 + 90 + 45
6

⇒   350  ⇒ 58.3
6

Difference ⇒ 58.3 - 55 = 3.3.

Hence, option B is correct.

3
Total production of A type company is what percentage of total production of E type company?
» Explain it
C
Total production of A type company -

⇒ 50 + 60 + 40 ⇒ 150

Total production of E type company -

⇒ 80 + 50 + 90 ⇒ 210

According to question  

150  × 100 ⇒   750  ⇒ 68.9
220 11

Hence, option C is correct.

4
Average production of A, D & E is approximately how much percentage of average production of B, C & F ?
» Explain it
B

Average production of A, D & E

150 + 190 + 220   ⇒   560
3 3

Average production of B, C & F  

170 + 105 + 115  ⇒  390  ⇒ 130
3 3

According to question –

(560/3)  × 100 
130

⇒   56000
390

⇒ 143.58%  ≈  144%

Hence, option B is correct.

5
What is the average of three highest productive (who has maximum production) companies in lakh tonnes?
» Explain it
D
Total production -

A →  150
B → 170
C → 105
D → 190
E → 220
F → 115

Average of three highest production which is clearly of company B, D and E
 
=   170 + 190 + 220  
3

= 193.34 ⇒ 193 lakh tonnes

Hence, option D is correct.


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