a chemial is mixed 30 ml mixed , 10 ml is acid , how much ml of acid must be mixed such that a 50/50 mixure of water and acid is attend if no additional water is added
the reminder when the posetive inteser mis divided by n is r. what is the reminder when 2m is devided by 2n
a tank 40% is full of water ,if 9 liters water is removed the tank become 1/4 full what is the capacity of tank of watera/
which one of the following fraction is a result of the sumof an intiger and its reciprocal?
which one of following is the minimum value of the sum of two integer whose product is 36
if A B C D and E are points in a plane such that the line CD bisects angle ACb and line CB bisects right angle ACE ,then DCE=?
if 7 workers can assemble a car in 8 hours, how long would it take 12 workers to assemble the same car?
when squared value of a number is subtracted from 5 times of a number the result is 6.what is the number?
a complets a job in 6 days,c in 20 days and d in 24 days if taka 8670 is to be devided among them, then b will get how much more than c?
karim has brought some pens for 120 taka.if each pencoast him 2 taka less then he could buy 2 more pens.how many pens did he buy?
if x+y=7 and x^2+y^2 =25 then which of the following equals the value of x^3+y^3 ?
the selling price of 15 items equals the coast of 20 items.what is the percentage profit earnd by the seller?
In a class ,25 students play cricket ,25 play footballand 10 play both.10 play neither cricket nor football.what is the numbar of students in the class?
৪০
50
৬০
৬৫
None
the leangth of a rectangular field is 30 meter.a fence surrounding the field has a total leangt of 140 meter.what is the leangth of athe diagonal path of this rectangular fieldl
if(x+3)^2=225,which of the following can be the value of x-1 ?
tahmid is four times as old as koushik.in x years,tahmid will be three times as old as koushik.how old is koushik in terms of x ?
on a youth football team, the ratio of boys to girls is 6 to 7.if there are 2 more girls than boys on the team, how many boys are on the team ?
what is the avareage of series 1,5,9,---,81 ?
nine identical machine , each working as same constant rate , can stice 27 jyrses in four minutes, how many minutes would it take 4 such machine to stice 60 jyrsys ?
the product of two consecutive negetive even integers is 24.what is the larger number?