Question

12% of _______ weight is 240gm.

Answer 1

Explanation:

Let 12% of x is 240 gm.

Therefore,

$12 \% \: \times x = 240 \\ \frac{12}{100} \times x = 240 \\ x = \frac{240 \times 100}{12} = 2000 \:= 2 kg$

Answer 2

Answer:

12% of 2 kg weight is 240 gm

Explanation:

Given:

Let 12% of w is 240 gm.  

Assume the unknown weight as w,

Therefore,  

12%×w=240 ;

Substitute % by 100 to the above equation;

$\frac{12}{100} \times w$ =240 ; -------A

We need to find the value of w,so move $\frac{12}{100}$ to RHS,while moving $\frac{12}{100}$ will become reciprocal as $\frac{100}{12}$

So,W= $\frac{240 \times 100}{12}$ =2000;

We need to convert gram to kg;

1 gram=0.001 kg;

0.001 can be written as 1/1000kg;

Therefor 1 gram =1/1000kg;

Substitute the above value to the given equation A,

W= $\frac{2000}{1000}$ =2kg