Let speed of train is x m/s So, length of train = 48 × x = 48x metres And, 48x + 225 = 1.5 × x × 42 Or, 15x = 225 Or, x = 15 m/s So, length of train = 48 × 15 = 720 metres Desired time = (720 + 120)/15 = 56 seconds
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A’ and ‘B’ entered into a partnership by investing Rs. 9000 and Rs. 5200, respectively. If ‘A’ invested his sum for only 4...
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A loss of 15% is made by selling an article. Had it been sold for Rs.75 more, there would have been a profit of 10%. What would be the selling price of ...
If a person sold a table, 1.whose cost is Rs. _________ and, 2.sold at __________% profit 3. by giving the discount of _________%, then to find the ...
