Question

In one year, the Amount collected for social welfare, of a village increased by 10% and in the next year, it decreased by 10%. If at the end of 2nd year, the amount was 7920, what was it in the beginning ?
A) 8800
B) 8650
C) 8000
D) 8980

Answer 1

Hey mate ^_^

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Answer:
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Let the amount collected be 'x'.

Then,

From the given conditions,

$x \times \frac{110}{100} \times \frac{90}{100}= 7920$

$x \times 0.99 = 7920$


$x = \frac{7920}{0.99}$

$x = 8000$

Therefore,

Correct option C) 8000

#Be Brainly❤️

Answer 2

In one year, the Amount collected for social welfare, of a village increased by 10% and in the next year, it decreased by 10%. If at the end of 2nd year, the amount was 7920, what was it in the beginning ?
A) 8800
B) 8650
C) 8000
D) 8980

Answer: C) 8000

Explanation:

Let the amount collected be 'A'

Then, from the given conditions,
A x 110/100 x 90/100
= 7920 A x 0.99 = 7920 A
= 7920/0.99
=> 8000