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Primary 4 | Maths
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can anybody rephrase the question to make it more understandable and explain the workings?
Date Posted: 4 years ago
Views: 484
Use units.
There are 9 units of stamps altogether (the denominator 9 in the fraction 7/9 represents the total number of units of stamps).
There are 7 units of Singapore stamps (the numerator 7 represents the total number of units of Singapore stamps) and 2 units of Malaysia stamps (the remaining number of units).
The difference is 5 units of stamps, which corresponds to the 45 more stamps.
5 units = 45
1 unit = 45 / 5 = 9
9 units = 9 x 9 = 81
so there are 81 stamps altogether.
There are 9 units of stamps altogether (the denominator 9 in the fraction 7/9 represents the total number of units of stamps).
There are 7 units of Singapore stamps (the numerator 7 represents the total number of units of Singapore stamps) and 2 units of Malaysia stamps (the remaining number of units).
The difference is 5 units of stamps, which corresponds to the 45 more stamps.
5 units = 45
1 unit = 45 / 5 = 9
9 units = 9 x 9 = 81
so there are 81 stamps altogether.
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done
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Use ratio is easier. Hope this helps
Date Posted:
4 years ago
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