Due to more demand of ball pen, its price increases by 50 paisa every year, whereas due to less demand of fountain pen, its price remains fixed every year. If in 2011, the price of a ball pen was Rs. 8 and that of a fountain pen was Rs.12, then in which year will the cost of a ball pen be equal to that of a fountain pen?
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Answer: 2019
Step-by-step explanation:
Price of fountain pen will remain same = Rs. 12
Current price of Ball pen = Rs. 8
Difference in prices = 12-8 = Rs. 4
Each year, price of ballpen increase by Rs 0.5
Hence, No. of years required = Difference / Increase
= (4 ÷ 0.5)
= 8 years
As per question, Current year = 2011
Hence, after 8 years it will be = 2011 + 8 = 2019
Ans: In 2019, price of ballpen and fountain pen will be same
:)
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