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Ritu can row downstream 20 km in 2 ho...

Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current.

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RD SHARMA ENGLISH-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-All Questions
  1. A boat goes 12 km upstream and 40 km downstream in 8 hours. It can ...

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  2. Roohi travels 300 km to her home partly by train and partly by bus....

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  3. Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 ho...

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  4. A takes 3 hours more than B to walk a distance of 30 km. But, if...

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  5. A train covered a certain distance at a uniform speed. If the train...

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  6. Places A and B are 100 km apart on a highway. One car starts from A an...

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  7. The taxi charges in a city comprise of a fixed charge together with...

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  8. The area of a rectangle gets reduced by 9 square units if its lengt...

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  9. A man sold a chair and a table together for Rs. 1520 thereby making a ...

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  10. 8 men and 12 boys can finish a piece of work in 10 days while 6 men...

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  11. The ratio of incomes of two persons is 9:7 and the ratio of their e...

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  12. In a Delta A B C , /C=3\ \ /B=2(/A+/B) . Find the three angles.

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  13. Find the four angles of a cyclic quadrilateral A B C D in which /A=(...

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  14. If in a rectangle, the length is increased and breadth reduced each...

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  15. The area of a rectangle remains the same if the length is increased...

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  16. The incomes of X and Y are in the ratio of 8:7 and their expenditures ...

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  17. A and B each has some money. If A gives Rs 30 to B , then B will ha...

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  18. 2 men and 7 boys can do a piece of work in 4 days. The same work is...

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  19. In a Delta A B C , /A=x^o,\ \ /B=(3x-2)^o,\ \ /C=y^o . Also, /C-/B=9^o...

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  20. In a cyclic quadrilateral A B C D, /A=(2x+4)^o,\ /B=(y+3)^o,\ /C=(2y+1...

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