Quantitative Aptitude - Arithmetic Ability Questions

A bag has Rs.51.25 in the form of 2-rupee, 50-paise and 25-paise coins in the ratio of 3:5:7. What is the total number of 50-paise coins?

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

20 pens and 46 pencils were purchased for Rs. 235. If the average price of a pencil is Rs. 2.50 then calculate the average price (in Rs.) of a pen.

What number should be added to each of the numbers 35, 115, 53 and 165, so that the resulting numbers are in continued proportion?

The third proportional of two numbers 7 and 21 is

Parimal has done 1/4th of a job in 10 days, Salim completes the rest of the job in 20 days. In how many days can they together do the job?

When a number is increased by 24, it becomes 104% of itself. What is the number?

What is the area (in sq cm) of a rectangle of perimeter 90 cm and breadth 20 cm?