019: Arun bought a car for 4,00.000 The next year, the price went upto & 4.20.000. What was
the Percentage of price increase?
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Answer:
The Percentage of price increase (r) is 5%
Step-by-step explanation:
Given,
Car price in buying time is 4,00,000 Car price upto rate is 4,20,000.
Car price upto time is next year or 1 year.
Then, P = 4,00,000 ; n = 1 year
According To The Question,
P×(1+r/100)^n = 4,20,000
=> 4,00,000×(1+r/100)^1 = 4,20,000
=> (1+r/100) = 4,20,000÷4,00,000
=> 100+r/100 = 21/20
=> 2000+20r = 2100
=> 20r = 2100 - 2000
=> 20r = 100
=> r = 100/20 = 5
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