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primary 6 | Maths | Algebra
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Cher
Cher

primary 6 chevron_right Maths chevron_right Algebra chevron_right Singapore

Help me with this question as I do not understand.

Date Posted: 1 month ago
Views: 12
snell
Snell
1 month ago
full tank: 9u
8 buckets = 4u
3 buckets + 14 bottles = 5u

8 buckets = 4u
12 buckets = 6u

3 buckets + 14 bottles = 5u
12 buckets + 56 bottles = 20u

by replacement,
12 buckets + 56 bottles = 20u
6u + 56 bottles = 20u
56 bottles = 14u
4 bottles = 1 u
36 bottles = 9 u = full tank

need 36 bottles to fill up the tank.

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Jerry
Jerry's answer
11 answers (A Helpful Person)
1st
36 bottles