Bar charts - Data Interpretation Questions and Answers

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The average production of 1996 and 1997 was exactly equal to the average production of which of the following pairs of years?

2000 and 2001

1999 and 2000

1998 and 2000

1995 and 2001

Answer : Option D

Explanation :

Average production (in 10000 tonnes) of 1996 and 1997 $\frac { 40 +60 } { 2 }$ = 50

We shall find the average production (in 10000 tonnes) for each of the given alternative pairs:

2000 and 2001 = $\frac { 50 +75 } { 2 }$ = 62.5

1999 and 2000 = $\frac { 65 +50 } { 2 }$ = 57.5

1998 and 2000 = $\frac { 45 +50 } { 2 }$ =47.5

1995 and 1999 = $\frac { 25 +65 } { 2 }$ =45

1995 and 2001 = $\frac {25 +75 } { 2 }$ = 50

The average production of 1996 and 1997 is equal to the average production of 1995 and 200

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