Answer:
I dont know for sure, but maybe try B
Step-by-step explanation:
Multiply 40x7 then subtract that total you got from multiplying 40x7 with 420
40x7=160
420-160=260
260 pieces of wood were left.
Answer:
6.68754...
Step-by-step explanation:
Assuming you mean:

Answer:
c
Step-by-step explanation: