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primary 5 | Maths | Rate & Ratio
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Lutz
Lutz

primary 5 chevron_right Maths chevron_right Rate & Ratio chevron_right Singapore

Hi i need help to explain on model and method. Thank you

Date Posted: 1 year ago
Views: 430

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Jackson Wan
Jackson Wan's answer
18 answers (Tutor Details)
1st
hi Lutz,
a)

JH has 1 unit of money at first
2/5 units of money is spent on the bag.
3/5 units of money is left.
1/6 of the 3/5 units of money is spent on the wallet
which is equal to 1/6 of the 6/10 units of money.
which is equal to 1/10 units of money.

-> You can also use 1/6 times 3/5 = (1*3)/(6*5) = 3/30 = 1/10

Answer: 1/10 of the money is spent on the wallet

b)
The bag costs 2/5 which is equal to 4/10 of the money.
4/10 - 1/10 = 3/10 of the money is equal to $87.

JH spent total of 4/10 + 1/10 = 5/10 or half of her money, which is equal to $87/3*5=$29*5=$145
Lutz
Lutz
1 year ago
Hi Mr Jackson, i cant understand on the step u taught. Can explain to me Mr Jackson. Thank u