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Brrunno [24]
3 years ago
5

This is my little brothers HW and I don't get it lol plz help

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
6 0
Hello!

ok so if it grows by 1/5 every week and today is 30cm long then last week or one week prior he was 30-30*1/5 = 24cm last week

hope this helps! any questions please ask! Thank you so much!
shusha [124]3 years ago
3 0
The crocodile grows 1/5 the length he was the last week. 

SO, you need to find a number that will ensure that the end result is 30.

What number plus 1/5 of it equals 30?

25. 

25/5= 5

25+5= 30

So, the number is 25. The crocodile was 25 cm long last week.

I hope this helps!
~kaikers
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