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Job

Rupali Bank Ltd. || Senior Officer (03-01-2020) || 2020

All Question

Let, number of total bench is x

Number of students = 5x - (4 × 5) = 5x - 20

In second case, number of students will bc = 3x + 20

According to the question,

5x - 20 = 3x + 20

= 5x - 3x = 20 + 20

= 2x = 40

 x=402=20

Number of benches is 20.

9 months ago

Larger number is x & smaller number is y.

According to question,

4x + 3y =71........(i)

and 2x = 5y + 3 (ii)

From equation (ii)

2x = 5y + 3

=2x-5y=3…………(iii)

Multiplying equation (iii) by 2 and subtracting it from equation (i), we get

4x+3y=71 4x-10y=6 -        +     -13y=65 =y=6513=5

Putting (y = 5) in equation (ii) we get,

2x = 5y + 3

=2x = (5 × 5) + 3 = 25 + 3 = 28

x=282=14

Larger number 14 and smaller number 5.

9 months ago