Ask Question
2 July, 22:03

Drusilla replaces the light bulb in the hall every 9 months and the air filter every 6 mont. she just replaced bot this month. After how many months will she replace both again?

+3
Answers (1)
  1. 2 July, 22:15
    0
    The least common multiple of 9 and 6 is 18 so in 18 months she will replace the bulb for the 2nd time and the air filter for the 3rd time. It will be the first time they are replaced together.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Drusilla replaces the light bulb in the hall every 9 months and the air filter every 6 mont. she just replaced bot this month. After how ...” in 📗 English if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers