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primary 5 chevron_right Maths chevron_right Fractions chevron_right Singapore

Please help with model method. Thank you

Date Posted: 3 months ago
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Ang Qi Jian
Ang Qi Jian's answer
7 answers (Tutor Details)
Adult : Children
3 : 5

After 6 adults and 4 children
The ratio is 3:4

The ratio of adult didn't change which indicates that the 6 adults are splited into groups of 2.

The children on the other hand are splited into group of 1. However, ratio is reduce by 1 which mean that the last group is further splitted.

From the adult graph, we can conclude that the last group contain 4 children. Hence one unit contain 4 people.

However the new unit contain 4+2 = 6 people.

3+4 = 7 units
7 units = 7 x 6 people
=42 people on the bus