Question

If 5 Mobiles and 4 Speakers cost Rs.29000, while 4 Mobiles and 3 Speakers cost Rs. 23000. The cost of each Mobile will be (a) Rs. 5000 (b) Rs.6000 (c) Rs. 8000 (d) Rs. 6550​

Answer 1

Given: 5 Mobiles and 4 Speakers cost Rs.29000, while 4 Mobiles and 3 Speakers cost Rs. 23000.

To find: The cost of each mobile.

Solution:

• To solve the given question, first, two equations are framed and then, they are solved simultaneously in order to find the cost of a single mobile and a single speaker.
• Let the cost of a mobile be equal to x and the cost of a speaker be equal to y.

• So, the first equation would be,

        $5x + 4y = 29000$

• And the second equation would be,

        $4x + 3y = 23000$

• On solving these two equations simultaneously, the obtained values are,

        $x = 5000$ and $y = 1000$

Therefore, the cost of each mobile will be Rs. 5000.