Pipe A can fill a tank in 12 hours and pipe B takes 18 hours to fill it. Both pipes were open together and a leak was spotted which increased the filling up time by 48 minutes Find how many hours it will take for the leak to empty a full tank.
Time of A and B for filling the tank = (12×18)/12+18 =216/30=7hours 12minute. Total time (A+B+C) 48 minute more than (A+B)- A+B+C =8 hours ABA+B+CC 12188 72 649-1 Efficiency of leak =9-(6+4) = -1 Leak will empty the whole tank =72/1 =72min
If 3 years is subtracted from the present age of R and the remainder is divided by 9, then the present age of his grandson A is obtained. If A is 4 yea...
At present Meena is eight times her daughter’s age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respective...
The average of the present ages of A, B, C and D is (y-3) years. 12 years hence, the ratio between the ages of A and C is 9:8 respectively. Th...
Present average age of A, B and C together is 44 years. Age of B is 12 Years hence from now will be 260% more than age of A. Four years ago from now ...
Arjun has a sibling who is 5 years older than him. When Arjun was born, his mother was 30 years old, and his father was 32 years old. If his sibling was...
The total age of A, B and C eight years hence will be 98 years. Find the age of C three years hence, if the present age of A and B is 30 years and 25 ye...
In a classroom there are 15 boys and 12 girls. Average age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the b...
The ratio of Anil’s age to Anila’s age is 6 : 5 and the sum of their ages is 66 years. What will be the ratio of their ages after 14 years?
The ratio of the present ages of P and Q is 7:5 respectively. If the age of P 10 years hence from now will be 100% more than the age of Q 4 years ago fr...
Present average of age of A and B is (9x-15) years. Present average age of A, B and C is (6x+5) years. If present age of B is 20% less than the present ...
