Tag: percent and percentage

Questions Related to percent and percentage

A reduction of 20% in the price of rice enables a person to buy 3.5 kg more for Rs. 77. Then the original price per kg is

maths percent and percentage use of percentages converting between fractions or decimals and percentages percentage of a quantity

  1. Rs. 4.00

  2. Rs. 4.50

  3. Rs. 5.00

  4. Rs. 5.50

Show answer
Correct Option: D
Explanation:

Let the original price of rice be $Rs. x\ per\ kg$.


New price $=\dfrac{4x}{5}\ per\ kg$

According to the question,
$\dfrac{77}{\dfrac{4x}{5}}-\dfrac{77}{x}=3.5$
$\dfrac{385-308}{4x}=3.5$
$\dfrac{77}{4x}=3.5$
$x=\dfrac{77}{14}$
$x=Rs.5.5\ per\ kg$

Hence, this is the answer.

Find the value of $6\%$ of Rs. $150$.

maths percent and percentage finding percentage of a number how many in all? problems on percentage

  1. $6$

  2. $9$

  3. $15$

  4. $None$  $of$  $these$

Show answer
Correct Option: B
Explanation:

$6\%\times Rs.150=Rs.9$

Find the value of $15\%$ of $200$ gm.

maths percent and percentage finding percentage of a number how many in all? problems on percentage

  1. $30 gms$

  2. $20 gms$

  3. $10 gms$

  4. $15 gms $

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Correct Option: A
Explanation:

$\Rightarrow15\%\times 200gm=\dfrac{15}{100}\times200$

$=30gm$

If $A$ is $150$% of $B$ then $B$ is what percent of $A+B$?

maths percent and percentage finding percentage of a number how many in all? problems on percentage

  1. $30$%

  2. $35$%

  3. $40$%

  4. $45$%

Show answer
Correct Option: C
Explanation:
$A=\frac{150}{100}B$
$A+B=\frac{150}{100}B+B=\frac{250}{100}B=2.5B$
B is $\dfrac{B}{A+B}\%  of A+B$
$\dfrac{1}{2.5}\times100$
$=40\%$
Option C is correct