Answer:
28 problems
Explanation:
If 6/7 were incorrect than 1/7 were correct.
1/7 = 4
4 x 7 = 28
Hope this helps and have a have a great day!
10 problems.
If she did 6/7 incorrectly, 1 was wrong 4-1 = 3
Then, add 3 to 7 and get 10
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