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primary 5 | Maths | Rate & Ratio
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Ethqn goh
Ethqn Goh

primary 5 chevron_right Maths chevron_right Rate & Ratio chevron_right Singapore

Pls help me

Date Posted: 9 months ago
Views: 60
J
J
9 months ago
5 men take 2 days to build a table.

So to build 9 tables, they will take :
2 days per table x 9 tables = 18 days

To build 9 tables in 3 days,
3 days ÷ 18 days = 1/6


It has to be done in 1/6 the time. Which also means 6 times as fast. So, we need 6 times the number of people.

5 men x 6 = 30 men

30 men - 5 men = 25 men

25 more men are needed.
Orange Tree
Orange Tree
9 months ago
25

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SJ Wong
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