exam Maths Puzzle Numerical Ability

Can someone help me with this?
The school system is trying to help their students be more successful. They are going to hire tutors to help. They must have more teachers than tuto

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exam Other Question
A quality control inspector found flaws in 13 out of 150 sweaters.


Here is the question: Find the probability that a sweater has a flaw. How many will not have flaws.


Whoever solves this thanks!!!! Jerry earned $18,500 one year and then received a 10.5% raise. What is his new yearly salary?

For this one would I just multiply 10.5 and 18500? Then add that amount to the 18500?