৩৯৯৩
The average age of 6 person’s is 32. If a 7" person - of age ‘k’ is included, the average becomes 36. Find the value of ‘k’.
উত্তর
60
৩৯৯৫
A & B together can complete a piece of work in 35 days, while A alone can complete the same Work in 60 days. B alone will be able to complete the same work in —— days.
উত্তর
84
৩৯৯৮
The ratio of *X’ age to ‘Y’s age is 4:3. X will be 26 years old after 6 years. How old.is Y now?
উত্তর
15