For the following questions answer them individually
The marks obtained by 5 children in a test are as follows: 12, 14, 8, IO and 16. What is the average marks obtained by these 5 children?
The lengths of the three sides of a triangle are in the ratio of 2 : 2 : 3. If the perimeter of the triangle is 42 cm, then what is the length of the largest side?
The selling price of an article is four times of its cost price. If the selling price is reduced by ₹300, then the profit becomes 250%. What is the cost price of the article?
A hemispherical bowl of radius 30 cm is filled with water by using a cylindrical glass. If the water from the cylindrical glass is poured 72 times to fill the bowl completely and the height of the glass is 10 cm, then what is the base radius of the cylindrical glass?
A solid copper sphere of radius 6 cm is melted and redrawn into a wire, whose radius of cross-section is 8 cm. Find the length of the wire.
If 20 men can complete a piece of work in 18 days working 5 hours per day, in how many days can 25 men complete it, working 6 hours per day?
The following pie chart gives the measures of the central angles of the sectors that reflect the number of questions in each of 8 different books with respect to the total number of questions in these 8 books taken together.
If the number of questions in the books B3 and B6 taken together is 165, then what is the total number of questions in the 8 books taken together?
$$J_{1}$$ can do a piece of work alone in 10 days, $$J_{2}$$ can do the same work alone in 12 days, while $$J_{3}$$ can do it alone in 15 days. They work together and complete the work, and receive a total of ₹2,250 for doing the work. What is the
difference in the shares of $$J_{1}$$ and $$J_{3}$$?
Reema went to a shopping mall to buy a gift. She saw a shop giving successive discounts of 50% and 30%, and from there selected a gift whose MRP was ₹1,700. How much did Reema have to pay to buy the gift?