Answer:
40
Step-by-step explanation:
What we need here is to know how many of 1 inch are there in 40 inches
This is straightforward, what we need to do here is to imagine having to mark 1 inch length on the ribbon using a mark of a scissors.
What we will notice is that we need to make 40 marks to have exhausted the entire length of the ribbon.
This is obtained by dividing the total 40 by 1 which is 40
7/2
17=x+x+10
17-10=2x
7=2x
x=7/2
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