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primary 6 | Maths
| Fractions
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Date Posted: 3 years ago
Views: 282
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I do not understand.
can u understand the model?
2/5 of total = 3/5 of remaining
this is the key
Based on the last sentence in the question
total : M : S+J = 5 : 2 : 3
M : J : M+J = 3 : 2 : 5
try to use M to link all ratio
total : M : S+J = 5 : 2 : 3 = 15 : 6 : 9
M : J : M+J = 3 : 2 : 5 = 6 : 4 : 10
S = total - M - J = 15 - 6 - 4 = 5
S : total = 5:15 = 355 : 1065
Ans: 1065【3 times of Singapore stamps】
2/5 of total = 3/5 of remaining
this is the key
Based on the last sentence in the question
total : M : S+J = 5 : 2 : 3
M : J : M+J = 3 : 2 : 5
try to use M to link all ratio
total : M : S+J = 5 : 2 : 3 = 15 : 6 : 9
M : J : M+J = 3 : 2 : 5 = 6 : 4 : 10
S = total - M - J = 15 - 6 - 4 = 5
S : total = 5:15 = 355 : 1065
Ans: 1065【3 times of Singapore stamps】
done
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lmk if u don’t understand or any issue with the answer :)
Date Posted:
3 years ago
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