Question

if x decreased by 40%gives 135 then x

Answer 1

⭐⭐Here is your answer⭐⭐


Let the no. be x,

Then,

=> x- 40x/100= 135

=> x - 2x/5 = 135

=>x/1 - 2x/5 = 135

Now LCM of 1 & 5 = 5

=> 5x-2x/5 = 135

=> 3x/5 = 135

=> x = 135 x 5/3

=> x = 45 x 5

=> x = 225


Hence, required no. = x = 225


⭐⭐Be Brainly⭐⭐

Answer 2

If $x$ decreased by $40\%$ gives $135$, then $x$ is $225$.

Step-by-step explanation:

Here the given number is $x$

Decreased amount is $40\%$ of $x$

$\quad=x\times\dfrac{40}{100}$

$\quad=x\times\dfrac{2}{5}$

According to the question, when $x$ is decreased by $40\%$, it gives $135$

$\Rightarrow x-x\times\dfrac{2}{5}=135$

$\Rightarrow x\times(1-\dfrac{2}{5})=135$

$\Rightarrow x\times\dfrac{3}{5}=135$

$\Rightarrow x=135\div\dfrac{3}{5}$

$\Rightarrow x=135\times\dfrac{5}{3}$

$\Rightarrow x=225$

So, the required value of $x$ is $225$.