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A mother weighs 100 lbs more than the combined weights of her baby and her god.  Together, all three weigh 172 lbs.  Her dog weights 40% of the weight of the baby.  How much does the baby weigh?

 May 25, 2020
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Let the baby's  weight =B
Dog's weight =0.4B
Mother's weight =B +0.4B + 100
(B +0.4B + 100) + B + 0.4B =172
2.8B =72 
B = 72 / 2.8
B = 25 5/7 lbs - Baby's weight
25 5/7 x 40% =10 2/7 lbs - dog's weight
100 + 25 5/7 + 10 2/7=136 lbs - Mother's weight

 May 25, 2020

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