Quantitative Aptitude - Arithmetic Ability Questions

A boy walking at the speed of 4 km/hr covers a certain distance in 6 hours 15 minutes. If he covers the same distance by cycle in 5 hours, then what is the speed (in km/hr) of the cycle?

An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?

Find the difference between place value and face value of 7 in 589573212.

α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?

A person driving at the speed of 40 kmph reaches office 1 minute early while he reaches 3 minutes late if driving at 36 kmph. What is the distance in km that she is covering?

A sum becomes Rs 10000 in 10 years on simple interest at the rate of 10% per annum. What is the total interest (in Rs) of the 10 years?

If cos 21° = x/y, then cosec 21° -­ cos 69° is equal to

The value of the expression 2(sin6θ+cos6θ) - 3(sin4θ+cos4θ) + 1 is