How do I solve this

Question

Jenny jogs every four days and Shannon jogs every five days. They both started jogging on Thursday of this week. A. When will they both jog again on the same day? B. What day of the week will it be?

Answer 1

the least common multiple of 5 and 4 is 20.

Jenny Shannon

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Thurs Thurs

Mon Tues

Fri Sun

Tues Fri

Sat Wed

Wed

in 20 days, it will be the 3rd wednesday