Question

ON SUNDAY 845 PEOPLE WENT TO THE ZOO.ON MONDAY ONLY 169 PEOPLE WENT.WHAT IS THE PER CENT DECREASE IN THE PEOPLE VISITY THE ZOO ON MONDAY?

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Answer 1

$\large\bold{\underline{\underline{{Given:-}}}}$

${\bullet\:}$ Number of people who went to zoo on Sunday = 845.

${\bullet\:}$ Number of people who went to zoo on Monday = 169

$\large\bold{\underline{\underline{{To\:Find:-}}}}$

${\bullet\:}$ Percentage decreased on on people visited zoo on Monday.

$\large\bold{\underline{\underline{{Solution:-}}}}$

${\bullet\:}$ We need to find the percentage decreased,

So,

$\sf\red{\bigstar\:}$ Number of people Decreased = Number of people who went to zoo on Sunday - Number of people who went to zoo on Monday.

$\purple{\implies\:}$ $\sf{845-169}$

$\purple{\implies\:}$ $\sf{676}$

Now,

$\boxed{\underline{\pink{\sf Percentage\:decrease=\dfrac{Decrease\:in\:number\:of \:people}{Number\:of\;people\:who\:went\:on\:sunday}  }}}$

$\purple{\implies\:}$ $\sf{\dfrac{676}{845} \times 100}$

$\purple{\implies\:}$ $\sf{\dfrac{67600}{845}}$

$\purple{\implies\:}$ $\sf{\dfrac{13520}{169}}$

$\purple{\implies\:}$ $\sf{\dfrac{13520}{13\times 13}}$

$\purple{\implies\:}$ $\sf{\dfrac{1040}{13}}$

$\purple{\implies\:}$ $\sf{80 \%}$

∴ Percentage Decreased = 80%.

_________________________________________

Answer 2

Solution:

On Sunday, people went to the Zoo

= 845

On Monday, people went to the Zoo = 169

Number of decrease in the people

= 845 – 169 = 676

Decrease percent = 676/845 × 100=80%  

Hence the decrease in the number of people visiting the Zoo is 80%.