Read the text then answer the questions Bac Giang becomes second-tier city The Prime Minister has inked a decision to recognize Bac Giang of the northern province of Bac Giang as a second-tier city. Bac Giang city is a political, economic and culture hub of the province. Located 50km to the North of Ha Noi and connecting Ha Noi with Lang Son city and Dong Dang border gate, Bac Giang city has become an industrial and service centre of Bac Giang province. Earlier, the city was recognized as a third-grade city in 2003. In 2013, average income per capital of the city was 1.45 times higher than the national average figure. Economic growth rate has increased constantly by 17.1% over the last three years. Poverty rate was 1.5%. How far is it from Bac Giang to Hanoi?