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primary 5 | Maths | Rate & Ratio
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Lily
Lily

primary 5 chevron_right Maths chevron_right Rate & Ratio chevron_right Singapore

Please help.
Thank you...

Date Posted: 5 years ago
Views: 276
J
J
5 years ago
Find the sum of their present ages first.

111 - 10 - 10 = 91 years
(You have to subtract for both Lucy and Marcus)

Lucy's age = 4 units
Marcus's age = 9 units

Total age = __units

And __ units = 91 years

1 unit = ?

From here it is easy to solve

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Brinda Rajendran
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Hope it’s clear:)
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Eric Nicholas K
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