cschellfamily
04.07.2019 •
Mathematics
Find a number whose fifth part inereased by 30 is equal to its fourth part decreased by 30.
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Ответ:
1200
Step-by-step explanation:
Let the number be represented by n. The problem statement tells us ...
... n/5 + 30 = n/4 - 30
Multiplying by 20 gives
... 4n +600 = 5n -600
Adding 600-4n gives
... 1200 = n
The number is 1200.
Ответ: