Mathematics mcqs

a can do a particular work in 6 days . b can do the same work in 8 days. a and b signed to do it for rs. 3200.

a can do a certain work-in the same time in which b and c together can do it.

a can do a certain job in 12 days. b is 60% more efficient than a. the number of days it takes for b to do the same piece of work, is:---------?

a can do (1/3) of a work in 5 days and b can do (2/5) of the work in 10 days. in how many days both a and b together can do the work ?

a can complete a work in 12 days with a working of 8 hours per day. b can complete the same work in 8 days when working 10 hours a day.

a can complete a journey in 10 hours. he travels first half of the journey at the rate of 21 km / hr and second half at the rate of 24 km / hr.

a camp has provision for 9 days for 500 men. at the end of 3 days 100 more men were admitted. how long will the food now last?

a bucket contains 2 litres more water when it is filled 80 % in comparison when it is filled 66 2/4 % what is the capacity of the bucket?

a brick measures 20 cm * 10 cm * 7.5 cm how many bricks will be required for a wall 25 m * 2 m * 0.75 m?

a boy has nine trousers and 12 shirts. in how many different ways can he select a trouser and a shirt?

a boy goes to his school from his house at a speed of 3 km / hr and returns at a speed of 2 km / hr.

a box contains nine bulbs out of which 4 are defectivif four bulbs are chosen at random, find the probability that at least one bulb is good.

a box contains nine bulbs out of which 4 are defectivif four bulbs are chosen at random, find the probability that all the four bulbs are defective.

a box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles.

a box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles.

a box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles.

a boats man can row in still water at speed of 7 km/hr.

a boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes.

a boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes.

a boat travels upstream from b to a and downstream from a to b in 3 hours.

a boat takes half time in moving a certain distance downstream than upstream. what is the ratio between the rate in still water and rate of current?

a boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still

a boat is rowed downstream at 15.5km/hr and upstream at 8.5 km/hr. the speed of the stream is--------?

a boat having a length 3 m and breadth 2 m is floating on a lake the boat sinks by 1 cm when a man gets on it. the mass of man is :----------?

a boat goes 24 km downstream in 10 hours, it takes 2 hours more to cover the same distance against the stream.