৩৯৭৩
The average of two numbers is M. If one number is N, then the other number is
উত্তর
2M-N
৩৯৭৪
The age of a son is 8 years and the sum of the ages of the son and the father is 56 years, What was the Father’s age 19 years ago?
উত্তর
29
৩৯৭৫
The ratio of the father’s age to the son's age is 3:11. 5 The difference of their ages is 24 years. Ratio of their ages after 3 years will be
উত্তর
1:3
৩৯৭৭
A can do a work in 10 days while B alone can do it,in 20 days. If they work together, in how many , days can A and B do the work?
উত্তর
6.67