Quantitative Aptitude - Arithmetic Ability Questions

In a triangle PQR, PX, QY and RZ be altitudes intersecting at O. If PO = 6 cm, PX = 8 cm and QO = 4 cm, then what is the value (in cm) of QY?

What is the value of 23+5252-23 ?

If Giri's salary is 9/5 times of Hariprasad's and Shaukat's is 9/2 times of Hariprasad's, what is the ratio of Giri's salary to Shaukat's?

If sinA = x, then x is equal to

Simplify : 132 - 142 + 172 - 250 = ?

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

What is the average of all numbers between 100 and 200 which are divisible by 13?

A can do a work in 20 days and B in 10 days. If they work on it together for 5 days, then what fraction of work is left.