The output in 2007 was 6500*( 1+20%)=7800.

(ten thousand tons)

Last year was 2008 and 2009, so the output in 2007 was below 6500 (ten thousand tons).

2)26*( 1- 15%)=22 (ten thousand tons)

3)650*( 1+30%)=845 (yuan)

4)1380/(1-35%) = 2123 (ten thousand hectares)

5) Excluding the travelling expenses, it cost 4250-20=4230 yuan.

If the price is not reduced, Uncle Wang should spend money on these two commodities.

4230/( 1- 10%)=4700

(yuan)