Question

If 2/5 of a number is 40, then find the number​

Answer 1

Answer:

2/5=40

2=40*5

 =200

1=100

hence the answer is 100......

Answer 2

Answer:

Missing number is $100$ . Therefore ,  $\frac{2}{5}$ of $100$ is $40$ .

Step-by-step explanation:

To find : missing number .

Given :  $\frac{2}{5}$ of a number is $40$ .

Solution :

• As per given data we know  that  $\frac{2}{5}$ of a number is $40$ .
• Let , $x$ be the number .  
• According to question we write as , $\frac{2}{5}\times x =40$ .
• Here, we will use the below following steps to find a solution using the transposition method:

1. We will Identify the variables and constants in the given equation.
2. Then we differentiate the equation as  LHS and RHS.
3. We take constants at RHS leaving variable at LHS.  
4. Simplify the equation using arithmetic operation as required to find the value of $x$ .
5. Then the result will be the solution for the given linear equation. By using the transposition method. we get,

          $\frac{2}{5}\times x =40\\\\x =40\times\frac{5}{2} \\\\x = 20\times 5\\\\x = 100$