1. Aarushi is helping her father plant trees to create a border around the backyard. Aarushi plants a tree every 25 minutes and her father plants a tree every 15 minutes. If they started together, how long will it be before they would finish planting a tree at the same time?

Dear student
It is given that Arushi plant a tree every 25 minutes and his father plant a tree every 15 minutes.Now, LCM25,15 is25=5×5and 15=3×5So, LCM25,15=3×5×5=75So, they both plant tree together after 75 minutes.
Regards

  • 4
at 75 minutes
 
  • 0
h
 
  • -2
answer is 75 minutes
  • 4
answer is before 75 min
  • 1
The 75th minute they work together they plant a tree at a same time
 
  • 2
75
  • 1
2 and a half hours
  • -3
even 75 minutes
  • 3
75 
  • 2
What are you looking for?