Total expenditure on all these items in 2007 was approximately what per cent of the total expenditure in 2011 ?

Total expenditure in 2007
= Rs. (288 + 98 + 3.00 + 23.4 + 83) lakh
= Rs. 495.4 lakh
Total expenditure in 2011
= Rs. (420 + 142 + 3.96 + 49.4 + 98) lakh
= Rs. 713.36 lakh
Let 495.4 = x % of 713.36
Then,
$$\eqalign{ & \Rightarrow \frac{x}{100}\times713.36 = 495.4 \cr & \Rightarrow x = \frac{495.40}{713.36}\times100 \cr & \,\,\,\,\,\,\,\,\, = \frac{12385}{17834}\times100 \cr & \,\,\,\,\,\,\,\,\, = 69.4\% \cr & \,\,\,\,\,\,\,\,\, \approx 69\% \cr} $$