I will give brainliest if you explain this! Please help I don’t know how to solve this!! Don’t just give me the answer

Answer:
...
Step-by-step explanation:
change the units of both the numbers in the question so that they are the same. then simplify until you can't anymore.
7. the units are already the same
10 : 1500 (÷10)
1 : 150 cm
8. 1cm : 4m
1cm : 400cm
(can't simplify 1, so leave it)
9. .... etc.