Question

The cost of 3 tables in equal to the cost of 7 chairs. The cost of one chair is Rs. 45.Find the of two tables ​

Answer 1

$\large\dag \rm \: \purple {Given}$

• The cost of 3 tables = cost of 7 chairs
• Cost of one chair = RS 45

$\large \dag \rm \: \purple{To \: Find}$

• The cost of 2 tables

$\large \dag \rm \: \purple{Concept \: Used}$

• Unitary method

$\large \dag \rm \: \purple{Solution}$

• Cost of 1 chair = RS 45
• Cost of 7 chairs = 45 × 7ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ= Rs 315

Here we got the cost of 3 tables too as cost of 7 chairs = cost of 3 tables = Rs 315

• Now let's find the cost of two tables

We have the cost of 3 tables

• Cost of 3 tables = Rs 315
• Cost of 1 table = 315 ÷ 3
• ㅤㅤㅤㅤㅤㅤ= Rs 105
• Cost of 2 tables = 105 × 2 = Rs 210

∴ The cost of 2 tables is Rs 210.