CTET 2 Math and Science Sep 2014 Paper

Question : 44 of 120

Marks: +1, -0

The value of a machine depreciates at the rate of 10% per year. It was purchased 3 years ago. If its present value is ₹ 1,45,800, for how much was it purchased ?

₹1,75,800
₹ 1,80,000
₹ 2,00,000
₹ 2,10,000

Validate

Solution:

Present value of machine

=\;\text"Machine value"\;(1-\;\;{\;\text"rate of depreciation"\;}/{100})^{\;\text"time"\;}

⇒145800=\;\text"Machine value"\;(1-\;\;{10}/{100})^{3}

⇒145800=\;\text"Machine value"\;(\;\;{90}/{100})^{3}

⇒\;\text"Machine value"\;=\;\;{145800×10×10×10}/{9×9×9}

=₹200,000

Go to Question:

Prev Question

Next Question