Quantitative Aptitude - Arithmetic Ability Questions

A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?

Find out the odd word/letters/number/number pair from the given alternatives.

Find the HCF of 48, 92 and 140

What is the slope of the line parallel to the line passing through the points (6,­3) and (2,­1)?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?

A number is greater than 58 times its reciprocal by 3/4. What is the number?

The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?