the price of the car has decreased by 10% and 20% in successive years. if the original cost of the car was rs. 10000 what is the current price?
Answers
Answer:
The price of an article is decreased by 10%. T o restore its former value the new price must be increased by :
A) 10%
B) 11%
C) 1118%
D) 1119%
Correct Answer:
D) 1119%
Step-by-step explanation:
Answer:
the current price of the car is Rs.7200.
Step-by-step explanation:
Given,
The lower quantity in the first year = 10%
The lower quantity in the 2nd year = 20%
To find,
The percent of charge decrease after years.
We can simply solve this mathematical trouble through the usage of the subsequent mathematical process.
Let, the charge of the car = Rs. x
Price after the bargain of 1st year = x - (x×10÷100) = x - x÷10 = Rs. 9x÷10
Price after the discount of second year = 9x÷10 - (9x÷10 × 20÷ 100) = 9x÷10 - 9x÷50 = 45x-9x÷50 = 36x÷50 = Rs. 18x÷25
Amount of charge decreased = x - 18x÷25 = Rs. 7x÷25
Percentage of charge decreased = 100 × (7x÷25 ÷ x) = 100 × (7x÷25 × 1÷x) = 100 × 7÷25 = 28%
the original cost of the car is Rs.10000
after applying a 28% decrease in the original cost car is
= 10000 × 28÷100
= 2800.
now, 10000 - 2800 = 7200.
therefore the current price of the car is 7200.
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