# Tata Infotech Papers: Sample Questions 30 - 31 of 41

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## Question number: 30

### Write in Short

A company rented a machine for Rs. 700/-a month. Five years later the treasurer calculated that if the company had purchased the machine and paid Rs. 100 /-monthly maintenance charge, the company would have saved Rs. 2000/-. What was the purchase price of the machine?

### Explanation

• A company rented a machine for Rs. 700 a month.
• So, yearly company pays Rs. rent for machine.
• So, for five years amount of rent will be Rs.
• After five years treasurer calculated that if company had purchased the machine and paid Rs. 100 monthly maintenance charge then company would have saved Rs. 2000.
• Company pays Rs. maintenance charge for a year.
• For five years company will pay Rs. maintenance charge.
• We are asked to find the cost price of machine. Let it be Rs. x.

• Cost price of machine is Rs. 34000.

## Question number: 31

### Write in Short

Complete the following series.

6,18,36,108,216,648, ________

### 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