Aptitude [Tata Infotech Placement]: Sample Questions 30 - 31 of 41
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Question 30
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A company rented a machine for ₹ 700/-a month. Five years later the treasurer calculated that if the company had purchased the machine and paid ₹ 100 /-monthly maintenance charge, the company would have saved ₹ 2000/-. What was the purchase price of the machine?
EditExplanation
- A company rented a machine for ₹ 700 a month.
- So, yearly company pays ₹ rent for machine.
- So, for five years amount of rent will be ₹
- After five years treasurer calculated that if company had purchased the machine and paid ₹ 100 monthly maintenance charge then company would have saved ₹ 2000.
- Company pays ₹ maintenance charge for a year.
- For five years company will pay ₹ maintenance charge.
- We are asked to find the cost price of machine. Let it be ₹ x.
- Cost price of machine is ₹ 34000.
Question 31
Explanation
- Here, first term of the series is 6.
- Second term of the series is 18, i.e..
- Third term of the series is 36, i.e..
- Fourth term of the series is 108, i.e..
- Fifth term of the series is 216, i.e..
- Sixth term of the series is 648, i.e..
- Here, in this series next term is either multiplied by 2 or 3 alternate.
- For next term previous term will be multiplied by 2.
- So, next term will be