High School

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Karen tries a new weight-loss product. She reduces her weight by 15% and is now 86.5 kg. What was her original weight?

a) 103.6 kg
b) 101.8 kg
c) 97.9 kg
d) 99.5 kg

Answer :

b) 101.8kg was her original weight.

To find Karen's original weight, we can set up the equation:

Original weight * (1 - 15%) = 86.5 kg

Let's solve for the original weight:

Original weight * 0.85 = 86.5 kg

Divide both sides by 0.85:

Original weight = 86.5 kg / 0.85 ≈ 101.76 kg

Rounding to one decimal place, Karen's original weight was approximately 101.8 kg.

So, the correct answer is: b) 101.8 kg

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