Quantitative Aptitude - Arithmetic Ability Questions

A person borrows some money for 4 years at the rate of simple interest. If the ratio of principal and total interest is 5 : 1, then what is the rate ( in percentage) of interest?

The ratio of present ages of Ratna and Shantanu is 5:4. After 19 years the ratio of their ages will be 10:9. What is Ratna's present age?

3 hrs after a goods train passed a station, another train travelling at a speed of 88 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 8 hours. What is the speed of the goods train?

Working 7 hours in a day, 4 men can do a piece of work in 8 days. Working 8 hours in a day, the required number of men to perform the same work in 4 days will be

874.96 + 94.0091 × 34.98 –1244.98 = ?

If a+b-62+a2b2+1+2b=2ab+2a, then the value of a is 

Convert the 0.0068 in to vulgar fraction:

If the numbers  93, 204, 256 are arranged in ascending order, then the right arrangement is