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Spiroplasma is a genus of bacteria that have a helical or spiral shape and can cause diseases in plants.
The ratio of the present ages of ‘A’ and ‘B’ is 5:6, respectively. Three years hence from now, the age of ‘B’ will be 21 years. If the avera...
The average ages of A, B and C is 20% more than the average ages of A and B. 10years hence from now, the ratio of the ages of A and C will be 3:5, respe...
The present age of a father is three times that of his son. After 10 years, the father’s age will be twice that of his son. What are their current age...
There are three persons 'Amit', 'Bhuvan' and 'Cheetan' such that 7 times the present age of 'Amit' is equal to 9 times the present age of 'Bhuvan' while...
P says to Q ‘’ I am thrice as old as you were when I was as old as you are’’. The sum of their ages is 100 years. Find the difference of their ...
The ratio of A's age to B's age after 18 years will be 5:6. Seven years ago, the ratio of their ages was 5:7. Find the present average age of A and B.
18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the f...
The respective ages of a mother and her daughter are 65 and 21 years. In how many years will the mother be thrice as old as her daughter?
Present average age of 4 friends: ‘A’, ‘B’, ‘C’ and ‘D’ is 30 years. If their ages are in the arithmetic progression in the same order a...
Tap P can fill the tank in 5 hours and Tap Q can empty it in `7(1/2)` hours. Tap P starts filling and they opened for 1 hour each alternatively....
