Weighing Proposition
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The sum of a mother, her baby and her dog’s weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?
That’s a ‘super-heavy’ mom and baby!
Baby weighs 25 kg
If Mother’s weight = M; Baby = B, Dog = D:
1. M + B + D = 170
2. M = (B + D) + 100
= > B + D = 35 (a)
3. D = B * 0.4 (Dog weighs 60% less than the baby => Dog’s weight is 40% (0.4) of the baby’s weight.)
(a) & (3) => B + D = B + 0.4B = 1.4 B = 35
=> B = 25
D = 10 and Mother, 135
Your Answer
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