Quantitative Aptitude - Arithmetic Ability Questions

The population of a town is 200000. It increases annually at the rate of 10%. What will be the population after 2 years?

In two types of brass, the ratios of Copper to Zinc are 8:3 and 15:7 respectively. If the two types of brass be melted and mixed in the ratio 5:2 a new type of brass is obtained. The ratio of Copper to Zinc in this new type of brass is

A vendor buys bananas at 12 for Rs 50 and sells at 5 for Rs 40. What will be the gain (in %)?

The population of a town is 350000. It increases annually at the rate of 20%. What will be the population after 2 years?

The incomes of X and Y are in the ratio 5 : 6 and their expenditure are in the ratio 6 : 5. If X saves Rs 7000 and Y saves Rs 15000, then what will be the income (in Rs) of X?

If A is 6 times more than B, then by what percentage is B is less than A?

Two numbers are more than the third number by 16.25% and 55% respectively. First number is what percentage of the second number?

If 3x + 4y – 2z + 9 = 17, 7x + 2y + 11z + 8 = 23 and 5x + 9y + 6z – 4 = 18, then what is the value of x + y + z – 34?