Quantitative Aptitude - Arithmetic Ability Questions

What is the value of (cos 40° – cos 140°)/(sin 80° + sin 20°)?

If A is 40% more than B, then B is how much percent less than A?

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

If 1/3(12x/5 - 1/2) + 6/5 = 7/6, then what is the value of x?

20% discount is offered on an item. By applying a promo code the customer wins 15% cash back. What is the effective discount?

Find the LCM of 15, 25 and 29.

In an examination 65% students pass in history and 55% students pass in hindi. If 5% students failed in both the subjects, then what is the percentage of students who have passed in both the subjects?

Select the odd word/letters/number/number pair from the given alternatives.