Answer :
Hello,
x= number of months that it takes for David and Louis to have equal amounts of
money.
Then:
[tex]140+x*150=260+x*120 \\ 150x-120x=260-140 \\ 30x=120 \\ \boxed{\bold{x=4}}[/tex]
Answer: it takes 4 months --> OPTION B
x= number of months that it takes for David and Louis to have equal amounts of
money.
Then:
[tex]140+x*150=260+x*120 \\ 150x-120x=260-140 \\ 30x=120 \\ \boxed{\bold{x=4}}[/tex]
Answer: it takes 4 months --> OPTION B