Question

plz answer fast!
I need it​

Answer 1

Answer:

Original Money for 3kg = rs.120

So price decreased = 20% decrease

So decrease amount = 20  × 120 = 24

                                          100 (cancel everything possible )

So new price = 120 - 24 = Rs.96

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Answer 2

Question:

• If the price of sugar is decreased by 20%, then the new price of 3kg sugar originally costing ₹120 will be?

Given:

• Price of sugar is decreased by 20%

• Price of 3kg sugar originally is ₹120.

To Find:

• Cost of 3kg sugar after decrement = ?

Solution:

Decrement in the price of sugar = 20%

Cost of 3kg sugar originally = ₹120

Cost of 3kg sugar after decrement = ₹{120 - (20% of 120)}

After evaluating, we get:

$= Rs.\left\{120\;-\Big(\dfrac{20}{100}\times120\Big)\right\}$

$= Rs.\left\{120\;-\;24\right\}$

$= Rs.\; 96$

Extra Information:

• Percentage is a number or ratio that can be expressed as a fraction of 100.
• To convert a fraction into a percentage we multiply the fraction by 100.

       Eg -   $\dfrac{3}{4}\longrightarrow\Big(\dfrac{3}{4}\times100\Big)\%=75\%$

• To convert a percentage into fraction, divide it by 100 and convert that fraction in the simplest form.

      Eg -   $35\%\longrightarrow\dfrac{35}{100}\longrightarrow\dfrac{7}{20}$

• To convert a percentage as a ratio we have to first convert it as a fraction and then write it as a ratio.

       Eg -  $19\%\longrightarrow\dfrac{19}{100}\longrightarrow19:100$

• To convert a ratio into percent we first have to convert it as a fraction and then multiply it by 100.

       Eg -   $1:2\longrightarrow\dfrac{1}{2}\longrightarrow\Big(\dfrac{1}{2}\times100\Big)\% \longrightarrow 50\%$