260,564 views
23 votes
23 votes
I got one step complete but I dont know the next one

I got one step complete but I dont know the next one-example-1
User Dattatray
by
2.9k points

1 Answer

14 votes
14 votes

We have the following:

black drone:


1170-64\cdot n

white drone:


966-52\cdot n

now, we must equal the two equations since they tell us that they are at the same height:


1170-64\cdot n=966-52\cdot n

solving for n, n = time in minutes


\begin{gathered} 64\cdot n-52\cdot n=1170-966 \\ 12\cdot n=204 \\ n=(204)/(12) \\ n=17 \end{gathered}

therefore, at 17 minutes both drones are the same height

User Aljosa Mohorovic
by
2.8k points