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primary 5 chevron_right Maths chevron_right Rate & Ratio chevron_right Singapore

Pls help

Date Posted: 5 months ago
Views: 66

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Farah saves $5 more than Shirley every day.

By the 5th day, Shirley will have saved $50

To catch up, Farah needs to save for 10 days.

To verify that this is correct, we calculate how much both of them saved on the 15th day.

(Shirley) 10 x 15 = 150
(Farah, starts 5 days later than Shirley) 15 x 10 = 150

We see that Farah needs to save for 10 days to catch up.
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Hor Kuok Theng
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