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primary 6 | Maths
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Eva
Eva

primary 6 chevron_right Maths

Donno know how to do .pls help me

Date Posted: 6 years ago
Views: 323

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Tan Kee Lin
Tan Kee Lin's answer
49 answers (Tutor Details)
1st
Let the amount discounted be x.
Number of bags before discount: Number of bags after discount = 1:160/100=5:8
Amount collected before discount: Amount collected after discount=
1:144/100= 25:36
5(40)/8(40-x)=25/36
x=1
Discounted price= 40-1
=$39
Percentage of discount
=1/40*100
=
2.5%
Eva
Eva
6 years ago
How does x =1
Eva
Eva
6 years ago
I don’t understand the formula.sorry