DUE SOON PLEASE HELP ME FIGURE THIS OUT, QUESTIONS ARE DOWN BELOW MANY THANKS

Question

asked May 7, 2024 189k views

1 Answer

Asra · Answer 1 · 2024-05-12T01:08:12+0000

Answer:

3.

12a + 21(12) = 21a

252 = 21a - 12a

252 = 9a

a = 252/9

a = 28 mins

Sam takes 28 minutes

Explanation:

im not sure about 4