Question

when 5 is added to twice a number we obtain 25 then number is a)20 b)10 c)5 d)25​

Answer 1

Answer:

b) 10

Step-by-step explanation:

let the number be x

5 + 2x = 25

2x = 25 - 5

2x = 20

x = 20/2

x = 10

Answer 2

Question:-

When 5 is added to twice a number we obtain 25 then number is

a)20

b)10

c)5

d)25

Solution:-

Let the given number be x.

According to the question -

$=> \: 5 + 2x = 25 \\ \\ => \: 2x = 25 - 5 \\ \\ => \: 2x = 20 \\ \\ => \: x = \frac{20}{2} \\ \\=> x \: = 10$

Verifying it:-

Here, L.H.S. = 5 + 2x

and R.H.S. = 25

Solving the L.H.S.

=> 5 + 2x

Putting the value of x i.e. 10

So, the equation becomes

=> 5 + 2 × 10

=> 5 + 20

=> 25 = R.H.S.

Therefore, the correct value of x is 10.

Answer:-

So, the number (x) is 10. Therefore, option b.) is correct.