Respuesta :
Using proportions, it is found that the final price of the new computer monitor is given by:
b. 120
What is a proportion?
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
It is regularly priced at $200 but it is now on sale for 25% off, hence 75% of $200 is paid, so:
P1 = 0.75 x 200 = 150.
You can also use your 20% off coupon, hence the final price is of 80% of $150, then:
FP = 0.8 x 150 = $120.
Which means that option B is correct.
More can be learned about proportions at https://brainly.com/question/24372153
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