Arlene weighs 55.8 kg. Tina is two times heavier than Arlene. Together with Karen, the three of them weigh 210.09 kg. How many kilograms does Karen weigh?

Correct answer:

K =  42.69 kg

Step-by-step explanation:

A=55.8 kg T=2 A=2 55.8=5558=111.6 kg  s=210.09 kg  s  = T+A+K  K=sTA=210.09111.655.8=42.69 kg

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