Explanation:
Salaries are given to employees on monthly basis usually and then their annual salary can be calculated by adding their monthly salaries over a period of one year. In this question, it is asked to calculate the salaries on yearly basis. Here the structure is given which is as follows:
$1200 Monthly ($1200 in a month).
$900 Biweekly (every two weeks or twice a week). If every two week, then there are four weeks in a month, so there will be two salaries of $900 in a month which will be $1800 in a month. If twice a week, then there will be two salaries in one week, that would be $1800 in one week and $7200 in a month.
$650 Weekly (there are four weeks, so 650*4 equals $2600 in a month).
$700 Semimonthly (It means two times in a month. 700*2 equals $1400 in a month).
So computing it on annual basis:
$1200 monthly, $1200 in a month would be 14400 yearly
$900 biweekly (every two weeks), $1800 in a month would be 21600 yearly
$900 biweekly (twice a week), $7200 in a month would be 86400 yearly
$650 Weekly, $2600 in a month would be 31200 yearly
$700 Bimonthly, $1400 in a month would be 16800 yearly
