Question
Which among the following nuclei is more stable based on
neutron-to-proton ratio?Solution
Four years ago, the average age of A, B and C was 24 years. At present, the ratio of the ages of A and B is 3 : 2, and C is 4 years older than A. What i...
In a school there are 20 girls. The average age of the girls is decreased by 2 months when one girl aged 18 years is 8 replaced by a new girl. What is t...
The average age of A, B and C is 30 years, while the average age of B, A and D is 24 years. If the ratio of the age of C and D is 5:3, respectively, the...
Ayush's current age is 25% greater than Ayushi's, and the difference between their ages is 8 years. What will be the ratio of their ages 8 years from now?
A certain sum of money becomes 4 times of itself in 15 years at simple interest. In how many years does it become double of itself at the same rate of s...
Present age of ‘A’ is 30% more than that of ‘B’. If 8 years hence from now, ‘B’ will be 9 years younger than ‘A’, then find the sum of p...
Present age of ‘A’ is 40% more than that of ‘B’. If 11 years hence from now, ‘B’ will be 5 years younger than ‘A’, then find the sum of ...
The ratio of age of ‘B’ after 5 years from now and age of ‘C’ 4 years ago from now is 7:4, respectively. The present age of ‘C’ is 30% of th...
Two years later, the ratio of Puneet's and Qureshi's ages will be 2:3. Currently, Puneet's age is 20% less than Rohit's. Five years ago, Rohit's age was...
There are 5 children in a family. The average age of the children is 10 years. If the present age of their mother and father is added, the average age o...
Relevant for Exams:
