sir could you please show me the steps to the solution t this problem,
thanks
Lets say in the 1st second you gain x meters (x = 5).
In the second you gain 1.5 * x
In the third you gain 1.5 * 1.5 * x
In the forth you gain 1.5 * 1.5 * 1.5 x
In the nth second you gain 1.5^(n-1) * x
After time T all that distance gained must add up to 30.
x (1 + 1.5^1 + 1.5^2 + 1.5^3 +.....1.5^(n-1) +......1.5^(T-1)) = 30
solve for T
