Quantitative Aptitude - Arithmetic Ability Questions

At 6% simple interest per annum a sum of money became Rs. 834 in 6.5 years. The sum initially invested was

The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of first 7 years is Rs 73 lakhs and that of last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?

If 5x/2 - [7(6x - 3/2)]/4 = 5/8, then what is the value of x?

If cos -225° = x, then the value of x is

Select the odd number from the given alternatives.

The income of Rahul is Rs 60000 and his expenditure is Rs 40000. If his income is increased by 20% and expenditure in increased by 15%, then what will be the percentage increase in his savings?

When a number is increased by 34, it becomes 117% of itself. What is the number?

What is the HCF of 36, 72 and 126?