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primary 6 | Maths
| Percentage
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Date Posted: 2 years ago
Views: 181
【total unchanged - internal transfer】
At first
D : E : T
= 12u : 12u-240 : 24u-240
Change【after 75% D → E】
D : E : T
= 3u : 21u-240 : 24u-240
In the end【after 1/3 E → D】
D : E : T
= 10u-80 : 14u-160 : 24u-240
E-D
= 14u-160-10u+80
= 4u-80 = 216
4u = 296
24u-240
= 6×296-240
= 1536 (Ans)
At first
D : E : T
= 12u : 12u-240 : 24u-240
Change【after 75% D → E】
D : E : T
= 3u : 21u-240 : 24u-240
In the end【after 1/3 E → D】
D : E : T
= 10u-80 : 14u-160 : 24u-240
E-D
= 14u-160-10u+80
= 4u-80 = 216
4u = 296
24u-240
= 6×296-240
= 1536 (Ans)
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