Answer:
it helps sharpen ur brain up for future so as not to be cheated by others
Rate for Sally is 1 room per 8hrs
rate for Steve is 1 room per 7hrs
combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min
Answer:
The answer is A
Step-by-step explanation:
No 30 points put I ranked up
Thx