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primary 6 | Maths
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Eric Lee
Eric Lee

primary 6 chevron_right Maths

Ratio

Date Posted: 6 years ago
Views: 370
BrIght Lee
BrIght Lee
6 years ago
20¢ x 19 = 380¢

380¢ + 130¢ = 510¢

Difference 50¢ - 20¢ = 30¢

No of 50¢ coins
= 510¢ ÷ 30¢
= 17

No of 20¢ coins
= 17 + 19
= 36

Total amount
= 17 x 50¢ + 36 x 20¢
= 850¢ + 720¢
= $15.70

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Amberlyn Lim
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