Mathematics mcqs

x and y started a business with capitals rs. 20000 and rs. 25000. after few months z joined them with a capital of rs. 30000. if the share of z in the annual profit of rs. 50000 is rs. 14000, then after how many months from the beginning did z join?

x and y started a business with capitals rs. 20000 and rs. 25000. after few months z joined them with a capital of rs. 30000.

none of these

7

6

3

wo pipes x and y fill a tank in 15 hrs. and 20 hrs. respectively, while a third pipe ‘z’ can empty the full tank in 25 hrs.  all the three pipes are opened in the beginning.  after 10 hrs. z is closed.  in how much time, will the tank be full ?

wo pipes x and y fill a tank in 15 hrs. and 20 hrs. respectively, while a third pipe ‘z’ can empty the full tank in 25 hrs.

12 hrs

18 hrs

14 hrs

16 hrs

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