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 ?

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...

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 tan...

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...