The distance between two pillars is 120 meters. The height of one pillar is thrice of the other pillar. The angles of elevation of their tops from the midpoint of the line connecting their feet are complementary to each other. The height (in metres) of the pillar is (use : √3 = 1.732 )

The average age of 24 boys and their teacher is 15 years. When the teacher's age is excluded, the average age decreases by 1 year. The age of the teacher is: 

A man bought a chair for ₹580. At what price should he sell the chair so as to gain 25%?

A person swims a distance of 28 km. in the direction of stream in 5 hours and a distance of 13 km. in 5 hours against the stream. What is the velocity of the stream?

X and Y enter into a partnership with capitals in the ratio 5 : 6 and at the end of 8 months, x with draws. If they receive profit in the ratio of 5 : 9. Find how long Y's capital was used. 

Study the following bar chart and answer the questions carefully.

What is the absolute change in overall sales turnover of the five companies together between 2001 - 2002 and 2002 - 2003 ?

If x+y=10 and xy=4, then what is the value of x⁴+y⁴=?

The cost price of a radio is Rs. 600. The 5% of the cost price is charged towards transportation. After adding that, If net profit to be made is 15%, then the selling price of the radio must be