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Start learning 50% faster. Sign in nowLet the original length of the train = x m ∴ Speed of the original train = x/20 m/s ∴ Length of the shorter train = x-200 ∴ speed of the shorter train = (x-200)/10 m/s Since, both the train are same their speed are also same ∴ (x )/20 = (x-200)/10 ⟹ 10 x = 20 x- 4,000 10 x =4,000 x = 400 ∴ Speed = x/20 =400/20 = 20m/s
Income of Ravi is Rs. 52,800, out of which he spent 35% on daily expenses, 5% on phone bills and saves the rest. If his income is increased by 15% and h...
Out of his total income, Rahul spent 25% on rent, 35% of the remaining income on groceries, and saved 60% of the income left after his expenses.
Preeti spends 35% of her monthly income on consumable items. Her annual income is Rs. 5.4 lac. What is the total amount that Preeti spends on consumable...
In a village with a population of 56,000, 35% are children, and the rest are adults. Out of the adult population, 80% are registered voters. How many r...
A bag contains 500 coins of 25p denomination and 1000 coins of 50p denominations. If 15% of 25p coins and 30% of 50p coins are removed, the percentage o...
Two students appeared in an exam and one secured 12 marks more than the other. If marks of student who got more marks is 52% of the sum of the marks of ...
In a colony, there are 60 APL families and 30 BPL families. Each APL and BPL family got blankets equal to 22% and 70%, respectively of total number of f...
Gaurav spends 25% of his salary on grocery and 35% of the remaining amount on electricity bills. If Gaurav saves Rs. 33637.5, what is his total salary?
