Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (1– sin A cos A)(sin A + cos A)?

A tower stands on the top of a building which is 40 metres high. The angle of depression of a point situated on the ground from the top and bottom of the tower are found to be 60 and 45 deg respectively. What is the height (in metres) of tower?

90% of X = 40% of Y and Y = a% of X. What is the value of a?

Cost price of a refrigerator is Rs 13400. If loss percentage is 4%, then what is the selling price (in Rs) of the refrigerator?

If P : Q : R = 2 : 3 : 5, then what is the value of (P + Q) : (Q + R) : (R + P)?

The number 3521is divided by 8. What is the remainder?

Triangle ABC as shown in figure has line XY parallel to the BC and the line BY is the bisector of angle XYC. Which of the following option is correct?

Selling price of a watch is Rs 966 and profit percentage is 15%. If selling price is Rs 798, then what will be the loss percentage?