After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)?

A jar contains only marbles of three colors : red, green and yellow. The red and green marbles are in the rati...

A box contains 200 marbles, 25% of which are of black colour. Babu took some marbles from the box found that 3...

If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the t...

A fruit salad is made by mixing 3 kgs of mango costing Tk 120 per kg and 2kgs of papaya costing Tk 100 per kg...

The members of a club participate in at least one game. Twenty of them play football, 10 play cricket, 12 play...

The cost of carpeting a room 18m long with a carpet 75 m wide at Tk. 4.50 per metre is Tk. 810. The breadth of...