Question

Less than what percentage of the Japanese people are farmers? 3% 5% 11% 15%

Answer 1

Less than "fifteen percent" of the Japanese people are farmers (in Japan, that is), due mostly to a large technological boom period and the fact that land is limited. 

Answer 2

Less than 5% of the Japanese people are farmers. That is only 6,340,000 people from a 126,800,000 population.

Japan is an urban society with less than 5% of the working population related to agriculture. Many farmers look for part-time jobs near cities to increase their income.