Question : The price of a house increases every year by 20%. If the current price is Rs. 7,20,000, then what was its price (in Rs.) 2 years ago?
Option 1: 5,00,000
Option 2: 5,50,000
Option 3: 4,50,000
Option 4: 5,80,000
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Correct Answer: 5,00,000
Solution : Present Price = 7,20,000 Let the price 2 years ago be $x$ ⇒ Price 1 year ago = x + 0.2$x$ = 1.2$x$ ⇒ Price now = 1.2$x$ + 0.2 × 1.2$x$ = 1.44$x$ Therefore, 1.44$x$ = 7,20,000 v = $\frac{720000}{1.44}$ = 5,00,000 Hence, the correct answer is 5,00,000.
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Question : The price of kerosene increases by 10 %, every year. If the current price of kerosene is INR 50 per litre then what will be the price of kerosene per litre after 2 years?
Option 1: INR 65.6
Option 2: INR 60.5
Option 3: INR 52.8
Option 4: INR 55.6
Question : A two-wheeler depreciates by 20% of its value every year. If the present value of the same is Rs. 90,000, its depreciated value would be Rs. 36,864 after:
Option 1: 6 years
Option 2: 5 years
Option 3: 4 years
Option 4: 3 years
Question : The population of a town increases by 8% every year. If the present population of the town is 14,580, then what was the population of the town 2 years ago?
Option 1: 13,600
Option 2: 12,200
Option 3: 13,765
Option 4: 12,500
Question : The price of a bike was Rs. 7000 last year. The price increased by 10% this year. What is the price of the bike this year?
Option 1: Rs. 7400
Option 2: Rs. 7700
Option 3: Rs. 7600
Option 4: Rs. 7500
Question : The average price of 20 pens is Rs. 18. If 12 new pens are added, then the average price rises by Rs. 4. What is the total price of the new pens?
Option 1: Rs. 384
Option 2: Rs. 368
Option 3: Rs. 328
Option 4: Rs. 344
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