Question

Average price of a chair, a table and a cot is Rs.1400
and average price of a table, a cot and an almirah
is Rs.1700. If the price of almirah is Rs. 1400 then
what is the price of chair.​

Answer 1

Answer: 500

Step-by-step explanation: Average of ;

Side 1 = (chair + table + cot) / 3 = 1400

Side 2 = (table + cot + almirah) / 3 = 1700

almirah = 1400

chair = ?

So Side 2 = (table + cot + 1400) = 1700 x 3

                 = (table + cot + 1400) = 5100

                 = (table + cot) = 5100 - 1400 = 3700

                 = (table + cot) = 3700

Substituting it in side 1

Side 1 = (chair + 3700) / 3 = 1400

          = (chair + 3700) = 1400 x 3

          = (chair + 3700) = 4200

          = chair = 4200 - 3700 = 500

so placing it in side 1

Side 1 = (500 + 3700) / 3 = 1400

          = 1400 = 1400