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Primary 4 | Maths
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Date Posted: 3 years ago
Views: 325
100 x 1/10 = 10
100 - 10 =90
90 x1/10 = 9
90 - 9 =81
81 x 1/9 =9
81 - 9 = 72
72 x 50 = 36$
100 - 10 =90
90 x1/10 = 9
90 - 9 =81
81 x 1/9 =9
81 - 9 = 72
72 x 50 = 36$
Monday, total =100 coins
10u =100
Used 1u =10
Tuesday, remaining =100-10=90 coins
10u =90
Used 1u = 9
Wednesday, left = 100-10-9=81 coins
9u = 81
Used 1u = 9
End of wed, left = 81-9 =72coins
Total money = 72×$0.50 = $36
Hope this helps
10u =100
Used 1u =10
Tuesday, remaining =100-10=90 coins
10u =90
Used 1u = 9
Wednesday, left = 100-10-9=81 coins
9u = 81
Used 1u = 9
End of wed, left = 81-9 =72coins
Total money = 72×$0.50 = $36
Hope this helps
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