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Gunpowder, also known as black powder, is composed of potassium nitrate (nitre), sulphur, and charcoal.
Five years ago, the average age of a family of four members was 25 years. Six years hence, the ratio of their ages will be 9:7:5:3. Find the a...
Mother‘s age is 5 times more than her daughter age. After 6 years she would 5 times of daughter age. After further 6 years how would be of daughte...
A 15-member group has two individuals aged 18 and 23. When excluded, the average age of the rest increases by 3 years. Find the average age of all members.
The present ages of Grandmother and Grandfather are in 6:8 if the ratio of Grandmother age after 8 years and Grandfather age after 4 years becomes 5:7 t...
At the time of 'Binny's birth, the age of 'Ankush' was twice the present age of 'Binny'. Fourteen years from now, if the ratio of their ages is 25:13, f...
Neeta is 15 years older than Reena. Five years ago, the ratio of Neeta's age to Reena's age was 11:8. What is Neeta's current age?
Four years ago, the age of person 'A' was three times the age of person 'B'. Eight years from now, the age of person 'A' will be 24 years more than the...
The sum of present ages of ‘Ali’ and ‘Fatima’ is 42 years. The present age of ‘Fatima’ is half the age of ‘Omar’ ...
The ratio of the present age of A to that of B is 7:9. Six years ago the ratio of 1/3 of A’s age at that time and 1/3 of B’s age at that time was 1:...
