Question

${\large{\matcal{\blue{\underline{\underline{\red{Question:-}}}}}}}$

If 10 percent less of a number is 30. Then find out the number to one decimal place.
(The que. is not talking about 10 percent of 30)

(Answer is:- 33.3)
Need explanation:-
Good explanation = BRAINLIEST. ​

Answer 1

Gɪᴠᴇɴ :-

• 10 percent less of a number is 30.

Tᴏ ғɪɴᴅ :-

• The number

sᴏʟᴜᴛɪᴏɴ :-

Let the number be x

then,

➦ According to Question :-

➭ x - 10% of x = 30

➭ x - 10x/100 = 30

➭ x - x/10 = 30

➭ (10x - x) /10 = 30

➭ 9x/10 = 30

➭ 9x = 30×10

➭ 9x = 300

➭ x = 300/9

➭ x = 100/3

➭ x = 33.3

Hence,

• Number is 33.3

Answer 2

Answer :

The required number is 33.3.

$\bold{\underline{Explanation}}$

We have 10 percent less of a specific number equal to 30.

Let the specific number be x.

As declared in the question, 10 percent less of (indicates multiplication) our assumed specific number x is 30.

=> $\sf{\dfrac{10}{100}\:\times\:x\:-x = 30}$

=> $\sf{\dfrac{10x}{100}\:-x\:=30}$

=> $\sf{\dfrac{10x-100x}{100} =30}$

=> $\sf{\dfrac{90x}{100}\:=30}$

=> $\sf{90x=30\:\times\:100}$

=> $\sf{90x=3000}$

=> $\sf{x\:=\:\dfrac{3000}{90}}$

=> $\sf{x=\:\dfrac{300}{9}}$

=> $\sf{x=33.3}$

Peace! :)