Quantitative Aptitude - Arithmetic Ability Questions

The simple interest on a sum for 20 years is 5/4 of the principal. What is the per annum rate (in percentage) of interest?

The average of the ages of Rajan and his son is 20. If Rajan's present age is three times the age of his son, then what will be the age of Rajan 5 years from now?

Find the HCF of 3341 and 3328.

If X = 600 and Y = 800, then X is how much percent less than Y?

Solve the following : -1/4 { -45 - (-96) / (-32)} = ?

If 6A = 11B = 7C; find A : B : C

If Tan θ = 7/24, then what is the value of Sec θ?

A labourer can do a job in 50 hours. After 5 hours he takes a break. What fraction of the job is yet to be done?