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.

Correct

none of these

Incorrect

3

Incorrect

7

Incorrect

6

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.

Correct

12 hrs

Incorrect

14 hrs

Incorrect

18 hrs

Incorrect

16 hrs

while selling the watch, a shopkeeper gives a discount of 5% if he gives a discount of 7 % he earns rs. 15 less as profit. the marked price of the watch is:

while selling the watch, a shopkeeper gives a discount of 5% if he gives a discount of 7 % he earns rs. 15 less as profit.

Correct

none of these

Incorrect

rs. 712.50

Incorrect

rs. 697.50

Incorrect

rs. 787.50