In a group f buffaloes and duck, the number of legs are 24 more than twice the number of hands. what is the number of buffaloes in the group?
بھینسوں اور بطخوں کے گروپ میں، ٹانگوں کی تعداد ہاتھوں کی تعداد سے دوگنا 24 زیادہ ہے۔ گروپ میں بھینسوں کی تعداد کتنی ہے؟
Answer: 12
Explanation
Let the number of buffaloes is x and the number of ducks is y.
Each buffalo has 1 head & 4 legs.
Each duck has 1 head & 2 legs.
So the number of heads =x+y and the number of legs=4x+2y.
So, by the given condition,
4x+2y=2(x+y)+24
4x−2x+2y−2y=24
2x=24
x=12
ND-21-5-2023
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