Quantitative Aptitude - Arithmetic Ability Questions

A sum of 2,000, invested at the rate of 8.5% simple interest per annum for 6years will yield an interest of

Gautam goes to office at a speed of 12 kmph and returns home at 10 kmph.His average speed is

A and B together do a job in 12 days and A could do the job in 20 days if he worked alone. How many days would B take to do the job if he worked alone?

A and B together can complete a work in 24 days. B alone does 1/3rd part ofthis work in 12 days. How many days will A alone take to complete the remaining work?

Average age of 4 daughters of a family is 12 years. The average age of daughters and their parents is 26 years. If the mother is 4 years older than the father, then what is the age (in years) of the father?

The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. The correct average of the observations is

The difference between cost price and selling price is Rs 12.54. If loss percentage is 33%, then what is the cost price (in Rs)?

If (4/5)A = 3B = (2/3)C, then what is A : B : C?