First, You Do 10 and 12 in the parentheses, then subtract 8 and multiply 7. Then This Equals 146. Hope this helps :)
1.C
12.25= 1hr
1:25= 2hrs
+50 mins
2.A
16.80+16.80= 33.60
16.80= round trip for child
16.80+33.60= 50.40
Answer:
Since it takes 7 people 28 minutes to paint 7 walls, it must take 1 person 28 minutes to paint each wall. Therefore, 14 people must also take 28 minutes to paint 14 walls, as each person still paints 1 wall individually.