Vietnam War ended through:

A) London Peace Accords

 B) Paris Peace Accords

C) Vienna Peace Accords

D) Washington Peace Accords

Vietnam got independence in 1954 from France. Soon the country was split into communist North Vietnam and non-communist South Vietnam. Communists in South Vietnam were called the Vietcong. In the early 1960s, they tried to overthrow the government. North Vietnam helped the Vietcong. The United States sent military advisers and supplies to help South Vietnam fight the Vietcong. In 1965, the U.S. sent soldiers to Vietnam. The U.S. troops had better technology and weapons. They had jet bombers, tanks, and helicopters. The Vietcong fought in small groups that hid in the jungle. They controlled most of South Vietnam.

The Antiwar Movement:  The U.S. was spending billions of dollars on the war. Many American soldiers were dying. On television, people saw soldiers fighting dangerous battles and the terrible results of U.S. bombs on Vietnamese people. Some people thought the United States had to fight communism everywhere. Others thought the United States should stay out of a war between North and South Vietnam. The government drafted young men into the army. Many did not want to fight in a war they believed was wrong. People had antiwar demonstrations in many parts of the country. In 1969, Richard Nixon was elected President. He started bringing soldiers home. But U.S. planes also increased the bombing of North Vietnam and started bombing Cambodia, a country west of Vietnam.

Paris Agreement 1973:  In 1973, North Vietnam, South Vietnam, and the United States agreed to a cease-fire. U.S. soldiers went home. The North Vietnamese won the war in 1975. Over 55,000 Americans died in the war. Communism was not stopped in Vietnam.

If A and B together can complete a job in 15 days and B alone can complete it in 20 days. In how many days can A alone complete job:

A) 60

B) 45

C) 40

D) 30

A and B together can complete the work in 15 days, so (A+B)’s one day work = 1/15

If A alone can complete a work in 20 days then A’s one day work =1/20

Let B alone can complete the work in x days , so B’s one day work = 1/x

Now ,

(A+B)’s one day work = A’s one day work + B’s one day work

=> 1/15=1/20+1/x

=> 1/x= 1/15 – 1/20

=> 1/x = 1/60

=> x=60

Hence B alone can complete the work in 60 days