00:01
Question we are given the function d with respect to time of a vehicle and d is the distance in kilometers it can travel on a single charge t years after its release and it's predicted that the distance decreases by s percent every 30 months.
00:35
And we want to find the value of s.
00:37
Now since the formula here, here is, or equation here is in terms of years, the t.
00:46
So we need to convert the 30 months first to years.
00:51
There'll be 30 over 12 years and that is 2 .5 years.
00:59
Now this s % is actually percentage change.
01:04
In general percentage change will be the new minus the o, always divide by the o times 100%.
01:15
So s % is a percent is, is the new i'll be using the distance at the point of 2 .5 years.
01:24
So d 2 .5 minus the o will be d when time is 0.
01:31
Over the o is d0 times 100%...