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## Speed of a boat in still water is 15 km/h. It goes 30 km upstream and returns back at the same point in 4 hours 30 minutes. Find the speed of the stream.

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important 5 mark board question

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## Find the values of k for which the pair of linear equations kx + 3y = k-2 and 12x + ky = k has no solution.

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it is important board question

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## Solve graphically the system of linear equations 4x-5y +16=0 and 2x+y-6 = 0. Determine the vertices of the triangle formed by these lines and the x-axis.

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I cant make the graph for this. please show steps to make graph its important 3 mark question for boards

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## The larger of the two supplementary angles exceeds the smaller by 18 find them.

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An Important question based on Linear Equations in two Variables Chapter of R.S Aggarwal book for ICSE & CBSE ...Read more

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## 2 men and 5 boys can finish a piece of work in 4 days, while 3 men and 6 boys can finish it in 3 days. Find the time taken by one man alone to finish the work and that taken by one boy alone to finish the work.

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ICSE & CBSE Board Question Based on Linear Equations in two Variables of RS Aggarwal In this question A piece ...Read more