Answer:
- It will take 1 week for both classmates to catch up with each other
- Each child has passed about 9 tests.
Explanation:
We know that:
- Q = 8 + 1(w)
- S = 4 + 5(w)
- Q = S
Work:
- 8 + w = 4 + 5w
- => 8 - 4 = -w + 5w
- => 4 = 4w
- => w = 1
Hence, it will take 1 week for both classmates to catch up with each other. Now, let's substitute the value of w into the first equation to find how many tests have each child passed.
- Q = 8 + (w)
- => Q = 8 + 1
- => Q = 9
Hence, each child has passed about 9 tests.
Hoped this helped.