Question

the total cost of 5 tables and 2 chairs rupees 990 if a table cost rupees 30 more than a chair find the price of each

Answer 1

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Let the cost of 1 table be x
And 1 chair be y

So , according to the question
5x + 2y = 990 (eq.1)

The cost of a table is Rs.30 more than a chair
So, x = y + 30 (eq.2)

Substituting x's value from (eq.2) to (eq.1)
5(y+30) + 2y = 990
5y + 150 + 2y = 990
7y + 150 = 990
7y = 990 - 150
7y = 840
y = 840/7 = Rs.120

We know that x = y +30
So, x = 120 + 30
x = Rs.150

The cost of 1 table is Rs.150 and 1 chair is Rs.120

Answer 2

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