A) 4:3
B) 4:9
C) 12:25
D) none of these
Correct Answer: C
Solution :
[c] Area of the sheet \[=\text{ }\left( 20\times 30 \right)\text{ }c{{m}^{2}}\] \[=\text{ }600c{{m}^{2}}\] Area used for typing \[=\left( 20-4 \right)\left( 30-6 \right)\text{ }c{{m}^{2}}\] \[=384\text{ }c{{m}^{2}}\] \[\therefore \] Required percentage \[=\frac{384}{600}\times 100%\] =64%You need to login to perform this action.
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