Ncert exemplar solutions for class 10 maths chapter 3 exercise 3.4
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Trigonometry — the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles. Find the ages of the father. Saritha paid Rs 27 for a book kept for seven days, while Susy paid Rs 21 for the book she kept for five days. She asked the cashier togive her Rs 50 and Rs 100 notes only. Find the speed of boat in still water and that of the stream.

Solution : Both the cross-streets are shown in the figure. Unit 2 carries a total weightage of 20 marks in the final examination. Street Plan : A city has two main roads which cross each other at the centre of the city. It is very important for all of student. A square carpet of sides 3 m is laid on the floor. Hence, the pair of linear equations is consistent. Solutions of or or or or or Optional are available to study online.

Find the area of the floor that is not carpeted. If the numerator and denominator are increased by 3, they are in the ratio 2:3. Page No: 53 Exercise 3. All Pair of Linear Equations in Two Variables Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Also it covers 40 km upstream and 48 km downstream in 9 hours.

Form the pair of linear equations in the following problems, and find their solutions if they exist by the elimination method: i If we add 1 to the numerator and subtract 1 from the denominator, a fraction reduces to 1. Initially, students will need to read and comprehend each chapter thoroughly before proceeding to get the answers to the questions. The coach of a cricket team buys 3 bats and 6 balls for Rs 3900. Meena got 25 notes in all. Which one has the largest area and which one has the smallest? Later, she buys another bat and 3 more balls of the same kind for Rs 1300. There are many cross- streets in your model.

The chapter begins with an Introduction situation to gradually lead the students into the world of Linear Equations in Two Variables. Also, nine times this number is twice the number obtained by reversing the order of the digits. Solution: Let the cost price of the saree be Rs. Eight years hence, the age of the man will be 4 years more than three times the age of his son. Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer, then Yash would have scored 50 marks.

With a revision of concepts learned in Grade 9, this chapter deals with further complex topics. No measuring of lengths or angles is allowed. Try to comprehend each and every area of the textbook which makes the task easier. Mark the essential points in each paragraph and frame the reply to the questions with extreme care. Accurate solutions are provided by the subject experts here. Go back to or View in Solutions.

Hence, the pair of linear equations is inconsistent. Download for offline use as well as for offline use. Find the speeds of the train and the bus. How much money did she invest in each scheme? Here, construction is the act of drawing geometric shapes using only a compass and straightedge. Using this convention, find: i how many cross — streets can be referred to as 4, 3. Class 10 Maths Chapter 4 Exercise 4. Arithmetic progression Arithmetic progression a sequence of numbers in which each differs from the preceding one by a constant quantity e.

After a month, the cost of 4 kg of apples and 2 kg of grapes is Rs 300. What is its area in square metres? After 5 years his age will be twice the sum of ages of two children. Formulate the following problems as a pair of equations, and hence find their solutions: i Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Applications of Trigonometry: It may not have direct applications in solving practical issues but used in the various field. When 18 is added to the number, the digits interchanged their places. The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160. If the difference of their perimeters is 16 cm, find the sides of two squares.

Find the co-ordinates of vertices of triangular region formed by these lines and x — axis. Therefore, the cost price of the saree and the list price price before discount of the sweater are Rs. Click here to to to get all exercises. It can be seen that there is only one cross-street which can be referred as 4, 3 , and again, only one which can be referred as 3, 4. Practising the exercises repeatedly will help the students score well in the examinations. Download options are given at the top of the page. Find the marks in the two subjects.

The solution of such equations is a pair of values for x and y which makes both sides of the equation equal. Later, she buys another bat and 3 more balls of the same kind for Rs 1300. Every question has been provided with a detailed solution. Find the fixed charge and the charge for each extra day. Form the pair of linear equations in the following problems, and find their solutions if they exist by the elimination method: i If we add 1 to the numerator and subtract 1 from the denominator, a fraction reduces to 1. Page No: 62 Exercise 3. All the other streets of the city run parallel to these roads and are 200 m apart.