1. The Dust Bowl was caused by a. overgrazing, plowing, and drought.
b. sheepherders who fenced the open plains.
c. too many wildcatters drilling for oil.
d. government programs that encouraged farmers not to grow crops.

2. One reason the economy slowed after World War I was that
a. too many people were looking for work.
b. government spending decreased.
c. newly discharged soldiers did not like industrial work.
d. not enough workers could be found.

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".

explanation:

the president, prime minister, chief justice, speakers and ministers take their oath of office. the oath is taken in bengali