একটি বিদ্যালয় ১২৬ জন ছাত্র-ছাত্রী বৃদ্ধি পাওয়ায় ১৪% ছাত্র-ছাত্রী বেড়ে গেল। বিদ্যালয়ের মোট ছাত্র-ছাত্রীর সংখ্যা কত?
Sam ranked ninth from the top and thirty -eight from the bottom in a class. How many student are there in the class?
Idark buys 80 kg sugar at Taka 40 per kg and 40 kg rice at Taka 50 per kg. At what price approximately in taka per kg of rice and sugar should he sell to make a profit of 10% on cost?
A rectangular field will be fenced on three sides leaving a side of 20 feet uncovered . If the area of the filed is 680 square feet, how many feet of fencing will be required?
The selling price of 15 items equals the cost of 20 items. What is the percentage of profit earned by the seller?
A class had 30 students. The class needs to select 3 represntatives. In how many ways can this be done?
In a group of 15,7 have studied Latin, 8 have studied Greek and 3 have not studied either. How many of these studied both Latin and Greek?
A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation.
The different between two numbers is 5 and the different between their squares is 65. What is the larger number?
What is the slope of a line containing the points (1,13) and (-3,6)?
If a+b+c=12, a+b=4, and a+c=7 what is the value of a ?
A cricket team has won 40 games out of 60 played . It has 32 more games to play. How many of these must the team win to make it record 70% win for the season?
2/0=?
3 pums, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?
A glass when full of milk weight one kg. When half full, it weights 3/4 kg, . What is the weight (in kg) of the empty glass?
If two angles are said to be complementary angles and one angle is 52 degrees, then the other angle is:
If w+x=-4 , x+y=25 and y+w=15, the the average of w, x,y is:
What is the next term in the sequence 4,9,6,11,8,13......?
What is the greatest common factor of 24 and 64?
If 12 man work on a particular task. It takes them 24 days to complex it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each othre to finish the same task?