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primary 5 | Maths
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Need to solve it using models method
Date Posted: 7 years ago
Views: 573
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right page is understanding to how to draw the model with the given clues (step-by-step analysis of question). Left page is the solution. Happy working!! :-)
Date Posted:
7 years ago
The answer given is 2700
Cannot compare 2/3 and 1/5 & change to same denominatr because 2/3 of SALARY & 1/5 of remaning salary :)
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hope this helps
Date Posted:
7 years ago
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I drew the diagram and work backwards...
Date Posted:
7 years ago
The answer is correct. But how can one say for sure that "1/5" is 450 i.e. It is half of 1/3?
Because after spending 1/5 of remaining, he had 2/3 of his total salary left. It also means that 1/5 of remaining spent also means 4/5 left... and the 4/5 left is equivalent to the 2/3 of his TOTAL salary.. so i drew up a model to match this.. from this, i find out that 1unit of the 1/5 remaining is half of 1unit of the 1/3 salary. So i can conclude that the "1/5" + $450 is equivalent to 1/3 of his TOTAL salary and that $450 is "1/5" which is 1/6 of the TOTAL salary.
Hope this helps... :) you can redraw the model to make it clearer..
Hope this helps... :) you can redraw the model to make it clearer..
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I've done it using algebra. Having a bit of a problem with model method
Date Posted:
7 years ago
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