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