What fraction must be subtracted from the sum of $\frac{1}{4}$ and $\frac{1}{6}$ to have an average of $ \frac{1}{12}$ of all the three fractions ?
Three yeas ago the average age of A and B was 18 years. While C joining them now, the average becomes 22 years. How old (in years) is C now ?
The mean temperature of Monday to Wednesday was 37°C and of Tuesday to Thursday was 34° C. If the temperature on Thursday was 4/5th that of Monday, then what was the temperature on Thursday ?
Average weight of three boys P, T and R is $54\frac{1}{3}$ kgs while the average weight of three boys, T, F and G is 53 kgs. What is the average weight of P, T, R, F and H ?
If twelve years hence a man is going to be $1\frac{1}{3}$ his age twelve years ago, What is his present age ?
The number of heat wave days in the Indian sub continent in 1995 was 29 and deaths due to heat wave were 406. What was the average of deaths per heat wave day in 1995 ?
Father’s age is 30 years more than the son’s age. Ten years hence the father’s age will become three times the son’s age that time. What is son’s present age in years ?
