Multiple choice

Cookies and milk are served daily in the kindergarden class to students before their nap time. But every fifth day and ninth day, juice and hot chocolate is served respectively. If both are served together today, on which day juice and hot chocolate both will be served together again?

  1. 30

  2. 35

  3. 40

  4. 45

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LCM of 5 and 9: Multiples of 5 are 5, 10, 15, 20, 25, 30, 35, 40, 45, 50. Multiples of 9 are 9, 18, 27, 36, 45, 54. So, every 45th day they will be served together from today.