Originally Posted by

**SlipEternal** $\displaystyle t = 7q_1+4$

$\displaystyle q_1 = 10q_2+3$

$\displaystyle q_2 = 16q_3+2$

Plugging in backwards, we have:

$\displaystyle q_1 = 160q_3+23$

$\displaystyle t = 1120q_3 + 165$

Thus, the number of helicopters allocated to each block is $\displaystyle \dfrac{t-165}{1120}$.

Question 2 makes no sense. It does not seem to be asking anything. I think it meant, how many helicopters were unallocated by the districts, blocks, and villages. The answer to that is 161 (165-4 = 161).