Answer:
O B. The conversion of money from one system to another system
Explanation:
Currency exchange is converting the currency of a country into the currency of another country. It is the conversion of the country's A currency to the country's B currency. The rate of converting the currency of one country to another is the exchange rate.
Currency exchange takes place in the foreign currency exchange market. Demand and supply factors determine the exchange rate between currencies of two countries.
Question 7
The equation of a straight line AB is

(a) Find the gradient of line AB.
(b) Find the y-intercept of line AB.
(c) A second line PQ is parallel to the line AB and passes through a point (2, -8).
Show that the second line PQ also passes through the point(-1,-5)
Answer:
$25,000
Explanation:
Assuming it is to be perpetuity. Amount to be saved = P/I
Amount to be saved = Annual interest amount / Annual interest rate
Amount to be saved = $2,000/8%
Amount to be saved = $2,000/0.08
Amount to be saved = $25,000
So, the worker should save $25,000 before retirement if he wishes to draw interest of $2,000 per year.
Answer:
(c). Random Stratified
Explanation:
Sampling refers to selection of a number of observations for analysis as a representative of the entire population of observations wherein the results would be interpreted the same as if the whole population was subject to analysis.
In a stratified random sampling, the observations are divided into small groups known as strata which relate to a sample interval, from which an item is chosen at random.
In stratified sampling, the selection of an item is taken from the observations belonging to a strata belonging to a particular sample interval.
In the given case, stratified random sampling has been used.
<span>D. None of these answers is correct. The industrial work that is done in the factory is of quality there should not be any problem. The manual work of expert artisans must also be quality work and therefore, in none of the cases should the work be of less quality. Social status does not matter because it is a comparison in the realization and quality of work not in social aspects of workers.</span>