AC Lim's answer to Crystal Ang's Primary 6 Maths Ratio Singapore question.
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Hope this helps
Date Posted:
8 months ago
May i know why 7u - 4u is 57? Isnt stated -57?
Mmm ...
At 1st is 7u
After gave away 57
Left 4u
So ...
Gave away 3u
Therefore, 3u = 57
At 1st is 7u
After gave away 57
Left 4u
So ...
Gave away 3u
Therefore, 3u = 57
Logically thinking... If you work on F.
At 1st is 3u
After received 57
Have 6u
So increased by 6u-3u = 3u
3u = 57
1u= 19
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.
At 1st is 3u
After received 57
Have 6u
So increased by 6u-3u = 3u
3u = 57
1u= 19
.
.
.
.
Thank you! Understand now!
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