Quantitative Aptitude - Arithmetic Ability Questions

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

Josna takes 4 hrs 30 min in walking a distance and riding back to some place where she started. She could walk both ways in 5 hrs 40 min. The time taken by her to ride back both ways is

An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

ΔABC is right angled at B. BD is an altitude. AD = 3 cm and DC = 9 cm. What is the value of AB (in cm)?

A boy crosses a 300 metres wide road in 30 seconds. What is his speed (in km/hr)?

A sum of money (P) doubles in 10 years. How much would it be in 20 years at the same rate of simple interest?

If x2 + ax + b, when divided by x + 3, leaves a remainder of -1 and x2 + bx + a, when divided by x - 3, leaves a remainder of 39, then a+ b = ?

Coefficient of x in (x + 8)(6 -­ 3x) is