Question
A train crosses a pole and a platform of length 576
metres in 12 seconds and 30 seconds, respectively. Find the length of train.Solution
Let the speed of train be 'v' m/s.
Length of train = '12v' metres
So, (12v + 576) Γ· 30 = 'v'
Or, 12v + 576 = 30v
Or, 18v = 576
So, 'v' = 32
Therefore, length of the train = 12 Γ 32 = 384 metres
Shyam marked an article 25% above cost price and sold it for Rs. 1080 after allowing a discount of 10%. Find his profit (in Rs.).
31 kg of rice βA is purchased for Rs. 7/kg while 28 kg of rice βBβ is purchased for Rs. 8/kg. If the mixture of the both types of rice is sold at ...
Priya bought two articles for Rs. 1080. She sold one at a loss of 25% and another at a profit of 25%. If the selling price of both the articles is equal...
A bag of cost price of Rs. 8000 is marked up by a certain percentage, and a discount percent of twice the markup percent is offered on it. If there is a...
A man lost one-fourth of his initial amount in the gambling after playing three rounds. The rule of Gambling is that if he wins he will receive Rs. 1000...
A shopkeeper sells an item for βΉ7200 and gains 20% on the cost price. If he sells the same item at βΉ8000, what will be his percentage gain?
A shopkeeper buys 20 articles for Rs 5,000. He sells each article at 25% profit on the cost price. Due to a seasonal sale, he offers a 10% discount on t...
Selling price of article βAβ when sold at a profit of 20% is Rs. 150 more than its selling price when sold at a loss of 30%. If the cost price of ar...
A shopkeeper marks up the price of an article by 40% on its cost price. He then offers a discount of 10% on the marked price. If the shopkeeper still ma...
K and L invested Rs. 3200 and Rs. 2800 respectively. After 6 months, L increases his investment by Rs. 1200. If the total profit for the year is Rs. 231...