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Answer :
Final answer:
Keri's weight can be found by setting up and solving a simultaneous equation that includes the weights of Stacey, Pam and Keri, given that Stacey weighs 3 pounds more than Keri, Pam weighs 4 pounds more than Stacey, and the total weight is 235 pounds. Through this, we find that Keri weighs 75 pounds.
Explanation:
This is a simultaneous equation problem. Let's say that Keri's weight is x pounds. According to the problem:
Stacey = x + 3 (because Stacey is 3 pounds more than Keri).
Pam = x + 3 + 4 (because Pam is 4 pounds more than Stacey).
Adding all these together: x + (x + 3) + (x + 3 + 4) equals the total weight which is given as 235 pounds.
So, the equation would be:
3x + 10 = 235.
Solving for x (Keri's weight), we would subtract 10 from both sides resulting in 3x = 225, then divide by 3 to get x = 75 pounds. Therefore, Keri weighs 75 pounds.
Learn more about Simultaneous Equations here: brainly.com/question/31913520
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