Jackson Wan's answer to Lutz's Primary 5 Maths Rate & Ratio Singapore question.
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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
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
Date Posted:
1 year ago
Hi Mr Jackson, i cant understand on the step u taught. Can explain to me Mr Jackson. Thank u
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