if the salary of a man employed in a factory is birr 20,000 In a year . he saves 25% of his income . how much he save in a year

he saves 5000 per year.

Step-by-step explanation:

Total Income = 20,000

Saves = 25% of 20,000

=>

=> 25 × 200

=> 5000

So, he saves 5000 per year.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°