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secondary 4 | E Maths
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qn 8 only. could you please explain beside the workings?
Date Posted: 7 years ago
Views: 383
If we pretend that we get 10 grams of cheese for $0.99 and we have $99, the amount of cheese we will get is -
(99 divided by 0.99) times 10 which is equivalent to 100 grams.
However, now we have x grams instead of 10 grams and $y instead of $99. So, our expression will be -
(y divided by 0.99) times x
(Note: 0.99 is the same as 99/100)
From there, we get -
(y divided by 99/100) times x
Which can be simplified to (100xy)/99
Sorry I ran out of rough paper so I couldn't write this out :( .... Lemme know if you need to clarify stuff.
(99 divided by 0.99) times 10 which is equivalent to 100 grams.
However, now we have x grams instead of 10 grams and $y instead of $99. So, our expression will be -
(y divided by 0.99) times x
(Note: 0.99 is the same as 99/100)
From there, we get -
(y divided by 99/100) times x
Which can be simplified to (100xy)/99
Sorry I ran out of rough paper so I couldn't write this out :( .... Lemme know if you need to clarify stuff.
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Hope this helps!
Date Posted:
7 years ago
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