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primary 6 | Maths | Percentage
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Xin
Xin

primary 6 chevron_right Maths chevron_right Percentage

Please help

Date Posted: 10 months ago
Views: 68
J
J
10 months ago
Children who remained = 1 - 3/8 = 5/8

Adults who remained = 1 - 4/9 = 5/9

5/8 children + 5/9 adults = 275

So, 1/8 children + 1/9 adults

= 275 ÷ 5 = 55

Multiply by 8.

So 8/8 children (all children) + 8/9 adults
= 55 × 8 = 440

Recall that all children + all adults = 475.

475 - 440 = 35 = 1/9 adults.

From here ,you can now calculate the total number of adults.

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Clare
Clare's answer
8 answers (Tutor Details)
1st
Notice the pattern and find the unknown slowly. Let c be 1 unit of children, let a be 1 unit of adults.