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primary 6 | Maths | Ratio
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Leow Wen Ze
Leow Wen Ze

primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

Pls assist. Thx

Date Posted: 4 years ago
Views: 257

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AC Lim
Ac Lim's answer
12076 answers (A Helpful Person)
1st
u= number of days
Hope this help
Leow Wen Ze
Leow Wen Ze
4 years ago
Pls elaborate on how 8.4u+39.20=140 come abt. Thanks
AC Lim
AC Lim
4 years ago
Amount of money receive are fixed each month.
Since the spending for Rachel is reduced 1/2 from 1st month to 2nd month., and Elijah spent increased by half, therefore Elijah will spent all the money faster (2x), mean 1st month take 24 days, 2 nd month will be 12 days spent all her money.

8.4u is came from 3 x 2.8u
39.20 is different balance from 1st month.
All this added together is same as 140 from 2nd month since they received fix amount every month.
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AC Lim
Ac Lim's answer
12076 answers (A Helpful Person)
Check on this model. Take note on Rachel money spend in Red shaded parts for 1st and 2nd month.