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Helpful source:
https://percent-calc.com/what-is-9-of-15000
86% if im correct, i got this answer because of the standard deviation, even though, im not 100% sure im correct, do some researching for this answer on top of mine!
The answer to your question is 67
Answer:
the value of B is B degree
4. 15 tens, 1 hundred, 5 tens
150
5. 18 tens, 1 hundred, 8 tens
180
note: I hope this helps. I haven't done this in a long time. Sorry X(