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Oxana [17]
3 years ago
10

A group of students are intending to offer a present to a friend. If each one pays 3000 LL.

Mathematics
1 answer:
Elanso [62]3 years ago
3 0

Answer:

There are 8 friends and the presents costs $30,000

Step-by-step explanation:

Let x be the number of students and y be the price of the present. Their contributions can be expressed as:

3000x=y-6000\ \ \ \  \ \ ...i\\\\4000x=y+2000\ \ \ \ \ \ \ \...ii

#Make y the subject in equation i then substitute in ii:

y=3000x+6000\\\\\#substitute \ in \ ii\\\\4000x=y+2000\\\\4000x=(3000x+6000)+2000\\\\1000x=8000\\\\x=8\\\\y=3000\times 8+6000\\\\y=30000

Hence, there are 8 friends and the present is priced at $30,000

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