Question

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If 2 tables and 3 chairs cost Rs. 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost?​

Answer 1

Answer:

Rs.1000

If 2 tables and 3 chairs cost Rs, 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost?

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Calvo Ogara

Answered August 1, 2019

Let x be table and y be chair

Equation:

2x+3y=3500……………(i)

3x+2y=4000……………(ii)

Solving eqn (i)

2x+3y=3500

Can as well be written as

2x=3500–3y

> x=[3500–3y]÷2…………(iii)

Using equation (iii) to solve equation (iii)

# 3x+2y=4000

Since we now know x,

# 3([3500–3y]÷2)+2y=4000

By solving the equation, will have,

10500–9y+4y=8000

Or,

9y-4y=10500–8000

>5y=2500

# y=500

Hence,taking any of the 3 equations can give us the value of x

3x+2y=4000

3x+(2×500)=4000

3x+1000=4000

3x=4000–1000

3x=3000

# x=1000

Thus,a table cost Rs.1000

its correct

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Answer 2

Answer:

Joseph John Thomson

Joseph John Thomson (J. J. Thomson, 1856-1940; see photo at American Institute of Physics) is widely recognized as the discoverer of the electron. Thomson was the Cavendish professor of Experimental Physics at Cambridge University and director of its Cavendish Laboratory from 1884 until 1919.