To purchase a gift to a retiring co-worker, everyone had to pay EUR 15. Because 4 workers were ill on the day the money was collected, everyone present had to pay additional 1 euro except retiring one. How many workers did the workshop have and how much did the gift cost?

Correct answer:

n =  65
d =  975 Eur

Step-by-step explanation:

15 x=(15+1) (x4)  x=64  n=x+1=64+1=65
d=15 n=15 65=975 Eur

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