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4 chairs and 3 tables cost Rs. 2100, and 5 chairs and 2 tables cost Rs. 1750. Find the cost of a chair.

500

300

200

150

Let the cost of a chair be Rs. x, and the cost of a table be Rs. y.

4x + 3y = 2100

5x + 2y = 1750

2 plates and 3 bowls together cost Rs. 2000, whereas 3 tables and 2 chairs together cost Rs. 2500. Find the cost of 1 plate.

700

400

Let the cost of the plate be Rs. x, and the cost of the bowl be Rs. y.

2x + 3y = 2000

3x + 2y = 2500

A man has only 20 paisa coins and 25 paisa coins in his wallet. If he has 50 coins in all totalling Rs. 11.25, how many 20 paisa coins does he have?

15

20

25

30

Let the number of 20 paisa coins be x, and the number of 25 paisa coins be y.

So, 20x + 25y = 1125

4x + 5y = 225 …(1)

Also,

x + y = 50 …(2)

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