Quantitative Aptitude - Arithmetic Ability Questions

When a number is increased by 24, it becomes 104% of itself. What is the number?

Two numbers are more than the third number by 16.25% and 55% respectively. First number is what percentage of the second number?

If x2 + (1/x2) = 1, then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1?

If cosec θ + sinθ = 5/2 then the value of cosecθ - sinθ is

If 2 T-shirts are offered free on purchase of 5 T-shirts, what is the effective discount (in %) on each T-shirt?

A man is running at the speed of 20 km/hr. What is time (in seconds) taken by man to cover one round of a circular garden of radius 350 metres?

Manish can complete a work in 21 days and Karan can complete the same work in 28 days. If both together work for 7 days, then what fraction of total work is left?

In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength ?