so the pair went down from 200 to 140, so the difference is 200 - 140 = 60.
so if we take 200 as the 100%, what is 60 off of it in percentage?

The least common multiple between those following numbers is C. 90.
Make hours to seconds to match meters
19.6*3600=70560 seconds
And is dropped from a height of 15.4 meters then the velocity will be
15.4m/70560s = 0.0002182539m/s
Answer:
Yemen was a poor country with a government widely acknowledged to be corrupt, with a large amount of weapons in private hands. By 2011, the country was already facing challenges from al Qaeda-linked militants and separatists in the south and Zaydi Shia rebels in the north.