Quantitative Aptitude - Arithmetic Ability Questions

Two numbers are in the ratio 2:5 and their HCF is 18. Their LCM is

P alone can do a piece of work in 8 days and Q alone can do the same work in 10 days. In how many days will both together complete the same work?

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.

Find the angular elevation of the sum when the shadow of a 15m long pole is 152meters

If the selling price is Rs 728 after getting a discount of 9%, what was the marked price?

A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

If 1p+1q = 1p+q, then the value of p3-q3

30% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?