A Co$.$ uses $100\%$ Bonus plan with a wage rate of Rs$\mathrm{.}20$ per hour and the standard production is $40$ units per hour. Bonus will be given for the time saved. Following is the data of Mr$.$ X: Units produced

Monday $360$

Tuesday $400$

Wednesday $350$

Required: Determine Mr$.$ X$$s total earning, the time saved, daily earnings and the labor cost per unit.