For the following questions answer them individually
An article is sold for ₹ 288 after successive discounts of 20% and 25%. Whatis the marked price of the article?
Ina circle of radius 17 cm, a chord is at a distance of 15 cm from the centre of the circle. What is the length of the chord?
The value of
$$ \sin^2 42^\circ + \sin^2 48^\circ + \tan^2 60^\circ - \cosec 30^\circ$$ is equal to:
The efficiencies of A, B, and C are in the ratio 2 : 5 : 3. Working together, they can complete a task in 12 days. In how many days can A alone complete 30% of that task?
Theprice ofpetrol is increased by 28%. A person wants to increase his expenditure by 22% only. By approximately what percent should he decrease his consumption?
In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class?