Answer:
d
Step-by-step explanation:
add all the angles you know to get 480
the number of angles - 2 x 180 to get 720
720-480=240
divide 240 by 3 to get x
The answer to this is 5x-8
Using proportions, it is found that their mom put 90 candies in the bowl.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
For this problem, the total amount is of x, hence, from the text:
- Tom's fraction is
.
- Carlos' fraction is
.
- Mary's fraction was of:

The remaining fraction after Mary was:

This amount is of 12, hence the total number of candies was:
2x/15 = 12
2x = 15 x 12
x = 15 x 6
x = 90.
More can be learned about proportions at brainly.com/question/24372153
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13/5 would be the answer if it's not a multiple choice.
28/8 or 7/2 is the answer to that