$[2]$ The observed times and performance ratings for a particular Project is $15$ Hours and $110\%.$ Calculate Standard time assuming rest and personal allowance as $15\%$ and contingency allowance as $2\%$ of the basic time.

If a worker works for $200$ Hours in a month and is salary is $5$ Ro$/$Unit$.$

Calculate number of units that worker produces per month and his salary per month.