Using proportions, it is found that:
a) 5 people are needed.
b) Yes.
What is a proportion?
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
Item a:
Each person works for 32 hours, and 150 hours are needed, hence the number of people needed is given by:
150/32 = 4.6875.
However, an integer number is needed, hence 5 people are needed.
Item b:
With 30 hours, the number of people needed is given by:
150/30 = 5.
Which remains the same.
More can be learned about proportions at https://brainly.com/question/24372153
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