Alan and Pedro eat today at the same Taqueria, but Alan attends every 20 days and Pedro every 38 when will they meet again?

380 days

Step-by-step explanation:

38 × 1 = 3838 × 6 = 228    

38 × 2 = 7638 × 7 = 266

38 × 3 = 11438 × 8 = 304

38 × 4 = 15238 × 9 = 342

38 × 5 = 19038 × 10 = 380

20 × 1 = 2020 × 6 = 120

20 × 2 = 4020 × 7 = 140

20 × 3 = 6020 × 8 = 160

20 × 4 = 8020 × 9 = 180

20 × 5 = 10020 × 10 = 200

20 x 10 = 200  20 x 20 = 400

so 20 x 19 = 380

First common number in both times table is 380

i got 10.28 but that rounds up to 10.3