@tanimaba347
Started 3 weeks ago in
unable to understand solution
The minor angle between the hours hand and minutes hand of a clock was observed at 8:48am. The minimum duration, in minutes, after 8.48 am when this angle increases by 50% is
@tanimaba347
Started 3 weeks ago in
did not understand logic behind solution
a precious stone has fallen and broken into 2 pieces of weights which are in ration 2:3. the value of the stone is proportional to value of its weight. if the value of the stone before breaking is rs. 26000, find loss due to breakage?
@tanimaba347
Started 3 weeks ago in
unable to understand solution
The equation x3+(2r+1)x2+(4r−1)x+2=0 has -2 as one of the roots. If the other two roots are real, then the minimum possible non-negative integer value of r is
@tanimaba347
Started 3 weeks ago in
unable to understand solution
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is.
@tanimaba347
Started 3 weeks ago in
unable to understand solution
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is.
@tanimaba347
Started 3 weeks ago in
unable to understand solution
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is.
@tanimaba347
Started 3 weeks ago in
unable to understand solution
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is.
@tanimaba347
Started 3 weeks ago in
unable to understand solution
The amount of job that Amal, Sunil and Kamal can individually do in a day, are in harmonic progression. Kamal takes twice as much time as Amal to do the same amount of job. If Amal and Sunil work for 4 days and 9 days, respectively, Kamal needs to work for 16 days to finish the remaining job. Then the number of days Sunil will take to finish the job working alone, is
@tanimaba347
Started 3 weeks ago in
can you please explain the solution
in a group of 10 students , the mean of lowest 9 scores is 42 and mean of highest 9 scores is 47. for the entire group of 10 students. the maximum possible mean exceeds the minimum possible mean by?
@tanimaba347
Started 3 weeks ago in
unable to understand solution
The average weight of students in a class increases by 600 gm when some new students join the class. If the average weight of the new students is 3 kg more than the average weight of the original students, then the ratio of the number of original students to the number of new students is