Charla and David are observing the leaf growth rates of their plants. Charla’s plant starts on day 1 with 43 leaves and gets 1 new leaf a day. David’s plant starts on day 1 with 27 leaves and gets 5 leaves a day.
How many days will it take David’s plant to have as many leaves as Charla’s plant?
7

4

9

8

Question

Charla and David are observing the leaf growth rates of their plants. Charla’s plant starts on day 1 with 43 leaves and gets 1 new leaf a day. David’s plant starts on day 1 with 27 leaves and gets 5 leaves a day.
How many days will it take David’s plant to have as many leaves as Charla’s plant? 
 7

 4

 9

 8

thecatman · Answer

b i think

paki · Answer

see.. Pc(Charla's plant)=42+n (where n is the number of days)
Pd(David Plant) = 7n
so we want to find when Pd=Pc
Solving..
7n=42+n
6n=42
n=7.
So, on day 7, David's plant will have as many leaves as Charla's plant....