Short formula btao percentage ka har ekk ques types ka

Percentage ke Short Formulas (Har Type ke liye)

Step 1: A B ka kitna percent hai?
Formula pahle:
$\frac{A}{B} \times 100$
Substitute: A ki value / B ki value × 100
Simplify: % mil jaayega.

Step 2: P% of Q nikaalna
Formula pahle:
$\frac{P}{100} \times Q$
Substitute: P/100 × Q
Simplify: Amount mil jaayega.

Step 3: P% of koi number X hai, toh number kya?
Formula pahle:
$\frac{X \times 100}{P}$
Substitute: X × 100 / P
Simplify: Original number mil jaayega.

Step 4: Percentage increase
Formula pahle:
$\frac{New - Old}{Old} \times 100$
New value: Old $\times \left(1 + \frac{r}{100}\right)$
Substitute: (Difference / Old) × 100
Simplify: Increase % mil jaayega.

Step 5: Percentage decrease
Formula pahle:
$\frac{Old - New}{Old} \times 100$
New value: Old $\times \left(1 - \frac{r}{100}\right)$
Substitute: (Difference / Old) × 100
Simplify: Decrease % mil jaayega.

Step 6: Successive percentages (do baar change)
Formula pahle: Final = Original $\times \left(1 + \frac{r_1}{100}\right) \times \left(1 + \frac{r_2}{100}\right)$
Ya net %: $r_1 + r_2 + \frac{r_1 r_2}{100}$ (dono increase ke liye)
Substitute: Values daalo.
Simplify: Net change mil jaayega.

Step 7: Profit %
Formula pahle:
$\frac{SP - CP}{CP} \times 100$
Substitute: SP/CP values.
Simplify: Profit % mil jaayega.

Step 8: Loss %
Formula pahle:
$\frac{CP - SP}{CP} \times 100$
Substitute: CP/SP values.
Simplify: Loss % mil jaayega.

Step 9: Population ya mixture mein % change
Formula pahle:
$\frac{New total - Old total}{Old total} \times 100$
Substitute: Numbers daalo.
Simplify: % change mil jaayega.

Sabse common: Base change
Agar base badalta hai toh: New % = Old % $\times \frac{New base}{Old base}$