What is the ratio whose terms differ by $40$ and the measure of which is $\frac{2}{7}$?

Q. The profits of a firm are to be distributed in a suitable ratio. Suitable ratio is the ratio whose terms differ by $40$ and the measure of which is $2/7$. Which of the following shows suitable ratio?

Q. Find the ratio whose terms differ by $40$ and whose simplified form is $\frac{2}{7}$.

Q.

The ratio whose terms differ by 40 is 2 : 7. The smallest number is ___.

Q. What is the difference between the sixth and the fifth terms of the sequence $2,4,7,...$ whose $n^{th}$ term is $n+2^{n-1}$ ?