question_answer

Madhulika thought of a number, doubled it and added 20 to it. On dividing the resulting number by 25, she gets 4. What is the number?

Answer:

Let the number be x

According to condition:

\[\frac{2x+20}{25}=4\]                                           \[2x+20=25\times 4\]                                        \[2x+20=100\]

\[2x=10020\]

\[2x=80\]

x\[=\frac{80}{2}\]

So, required number is 40.