You would move your point 24 up from the starting point then move it three down from the 24 so if you start at zero go to 24 then move it down to 21.
The quotient of -3/8 and -1/3 is 1 1/8.
You have your choice of two pairs of consecutive even integers:
-36 and -34
OR
34 and 36 .
She will have four pound left because 2 times 3 is 6 and 10 minus 6 is 4