Question

Please answer Question no. 13​

Answer 1

Answer:

Step-by-step explanation:

Ex

planation:

Let the number of students in rooms A and B be x and y respectively.

Then, x - 10 = y + 10 x - y = 20 .... (i)

and x + 20 = 2(y - 20) x - 2y = -60 .... (ii)

Solving (i) and (ii) we get: x = 100 , y = 80.

The required answer A = 100.

Answer 2

Answer:

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Step-by-step explanation:

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