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What was the difference between the average exports of the three Companies in 1993 and the average exports in 1998?

Rs. 15.33 crores

Rs. 18.67 crores

Rs. 20 crores

Rs. 22.17 crores

Answer : Option C

Explanation :

Average exports of the three Companies X, Y and Z in 1993

= Rs. [ $\frac { 1 } {3}$ x (30 + 80 + 60)] crores = Rs $[\frac { 1 70} { 3 } ]$ crores

Average exports of the three Companies X, Y and Z in 1998

= Rs. [ $\frac { 1 } {3}$ x (50 + 100 + 80)] crores = Rs .[ $\frac { 230 } { 3 }$ ] crores

Differenece = Rs.[ $\frac { 230 } {3 }$ ] - [ $\frac { 170 } { 3 }$ ] ] crores

= Rs [ $\frac { 60 } { 3 }$ ] crores

= Rs. 20 crores

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