On Monday, Jayla raised $30 and Carlos raised $50. After that, Jayla raised $12 per day and Carlos
raised $7 per day. After how many days will they
have raised the same amount?

They will raise the same amount after days.

84 days

Step-by-step explanation:

You would use the LCM to solve this.

12 and 7 don't share any common factors other than 1,

so you would multiply 12 x 7, which gets you 84.

After 84 days they would have raised the same amount.