the press was invented about 1450 and had little change for 350 years. since then many changes have been made. how many decades have changes been occurring?

Question

the press was invented about 1450 and had little change for 350 years.  since then many changes have been made.  how many decades have changes been occurring?

Ms. Sue · Answer

1450 + 350 = 1800 2012 - 1800 = 212 212 / 10 = 21 decades

talal · Answer

50 out of350studentwho sat a test scored less than 50 marks what percent scored less than 50 marks