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To increase the sales, a shopkeeper gives40% discount on the goods. There was a rise of 120% in sales. Find % change in revenue

I AM UNABLE TO SOLVE SEATING ARRANGMENT AND PUZZLE IN EXAM OF BANK PO IN CLERK LEVEL I AM ABLE TO SOLVE THEM BUT IN PO I AM NOT ABLE BECAUSE NUMBER OF ELEMNTS INCREASES AND CONDITIONS INCREASES AS IT IS JUST BANK PO I WANT TO KNOW AGAR CAT KI PREPRATION KE STUDENTS KAISE SEATIING ARANGEMNT AUR PUZZLE SOLVE KARTE HAI

I am not good in geometry should I invest time in geometry now or shall I leave that section and use that time for those sections in which I have good hold?

How can I improve in Quant? Given enough time I can solve at least 25-30 questions of a mock while analyzing it, but while taking mocks I am able to attempt only 12-15 questions?

how to get udated about current affairs??

how to get udated about current affairs??

If the equation 9x+13y=k has exactly 5 solutions, where x and y are positive integers, what is the minimum possible value of k ?

Find the number of ways of distributing 11 pastries of different flavors among 3 people such that everyone gets at least one pastry.

time and distance

Is there any short tricks to solve inequalities in aptitude..