NCERT Class 10
A motorboat can travel 30 km upstream and 28 km downstream in 7 hours. It can travel 21 km upstream and return in 5 hours. Find the speed of the boat in still water and the speed of the stream.
22
Nov
A motorboat can travel 30 km upstream and 28 km downstream in 7 hours. It can travel 21 km upstream and return in 5 hours. Find the speed of the boat in still water and the speed of the stream. A motorboat can travel 30 km upstream and 28 km downstream in 7 hours. It [...]
A person, rowing at the rate of 5 km/h in still water, takes thrice as much time in going 40 km upstream as in going 40 km downstream. Find the speed of the stream.
22
Nov
A person, rowing at the rate of 5 km/h in still water, takes thrice as much time in going 40 km upstream as in going 40 km downstream. Find the speed of the stream. A person rowing at the rate of 5 km/h in still water takes thrice as much time in going 40 km [...]
Ankita travels 14 km to her home partly by rickshaw and partly by bus. She takes half an hour, if she travels 2 km by rickshaw, and the remaining distance by bus. On the other hand, if she travels 4 km by rickshaw and the remaining distance by bus, she takes 9 minutes longer. Find the speed of the rickshaw and of the bus.
22
Nov
Ankita travels 14 km to her home partly by rickshaw and partly by bus. She takes half an hour, if she travels 2 km by rickshaw, and the remaining distance by bus. On the other hand, if she travels 4 km by rickshaw and the remaining distance by bus, she takes 9 minutes longer. Find [...]
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and the remaining distance by bus. On the other hand ,
Ankita travels 14 km to her home partly by rickshaw and partly by bus. She takes half an hour ,
if she travels 2 km by rickshaw ,
if she travels 4 km by rickshaw and the remaining distance by bus ,
she takes 9 minutes longer. Find the speed of the rickshaw and of the bus. ,
Determine, algebraically, the vertices of the triangle formed by the lines 3x – y = 3, 2x – 3y = 2 and x + 2y = 8
22
Nov
Determine, algebraically, the vertices of the triangle formed by the lines 3x – y = 3, 2x – 3y = 2 and x + 2y = 8 2x – 3y = 2 and x + 2y = 8 algebraically Determine the vertices of the triangle formed by the lines 3x – y = 3 November [...]
The cost of 4 pens and 4 pencils boxes is ₹100. Three times the cost of a pen is ₹15 more than the cost of a pencil box. Form the pair of linear equations for the above situation. Find the cost of a pen and a pencil box.
22
Nov
The cost of 4 pens and 4 pencils boxes is ₹100. Three times the cost of a pen is ₹15 more than the cost of a pencil box. Form the pair of linear equations for the above situation. Find the cost of a pen and a pencil box. If 8 is subtracted from each of [...]
Draw the graphs of the equations x = 3, x = 5 and 2x – y – 4 = 0. Also find the area of the quadrilateral formed by the lines and the x-axis.
22
Nov
Draw the graphs of the equations x = 3, x = 5 and 2x – y – 4 = 0. Also find the area of the quadrilateral formed by the lines and the x-axis. Draw the graphs of the equations x = 3 x = 5 and 2x – y – 4 = 0. Also [...]
Determine, graphically, the vertices of the triangle formed by the lines y = x, 3y = x and x + y = 8
22
Nov
Determine, graphically, the vertices of the triangle formed by the lines y = x, 3y = x and x + y = 8 3y = x and x + y = 8 Determine Graphically the vertices of the triangle formed by the lines y = x November 22, 2020 Category: Chapter 3 - Pair of [...]
Graphically, solve the following pair of equations: 2x + y = 6 and 2x – y + 2 = 0 Find the ratio of the areas of the two triangles formed by the lines representing these equations with the x-axis and the lines with the y-axis.
22
Nov
Graphically, solve the following pair of equations: 2x + y = 6 and 2x – y + 2 = 0 Find the ratio of the areas of the two triangles formed by the lines representing these equations with the x-axis and the lines with the y-axis. Graphically If 8 is subtracted from each of the [...]
The angles of a cyclic quadrilateral ABCD are ∠A = (6x + 10)°, ∠B = (5x)°, ∠C = (x + y)° and ∠D = (3y – 10)°. Find x and y and hence the values of the four angles.
22
Nov
The angles of a cyclic quadrilateral ABCD are ∠A = (6x + 10)°, ∠B = (5x)°, ∠C = (x + y)° and ∠D = (3y – 10)°. Find x and y and hence the values of the four angles. ∠B = (5x)° ∠C = (x + y)° and ∠D = (3y – 10)°. Find x [...]
In a competitive examination, one mark is awarded for each correct answer while 1/2 mark is deducted for every wrong answer. Jayanti answered 120 questions and got 90 marks. How many questions did she answer correctly?
22
Nov
In a competitive examination, one mark is awarded for each correct answer while 1/2 mark is deducted for every wrong answer. Jayanti answered 120 questions and got 90 marks. How many questions did she answer correctly? In a competitive examination one mark is awarded for each correct answer while 1/2 mark is deducted for every [...]