All the countries are arranged in ascending order of per acre yield. If bottom 2 countries increases their per acre yield by 20% and all other countries increase their per acre yield by 10%, then what is the new average per acre yield (in million tonnes)?

Countries in ascending order : 

Nepal : $$82\times\frac{110}{100}=90.2$$ 

Thailand : $$104\times\frac{110}{100}=114.4$$

Singapore : $$120\times\frac{110}{100}=132$$

Bhutan : $$162\times\frac{110}{100}=178.2$$

Srilanka : $$250\times\frac{110}{100}=275$$

China : $$272\times\frac{120}{100}=326.4$$

India : $$300\times\frac{120}{100}=360$$

=> New average per acre yield (in million tonnes) = $$\frac{(90.2+114.4+132+178.2+275+326.4+360)}{7}$$

= $$\frac{1476.2}{7}=210.88$$

=> Ans - (B)