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primary 5 | Maths | Whole Numbers
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Yalinee
Yalinee

primary 5 chevron_right Maths chevron_right Whole Numbers chevron_right Singapore

Pls help to solve the problem

Date Posted: 1 week ago
Views: 22

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take number of adults as 1 unit
n.o of boys is twice of n.o of adults
so n.o of boys = 2 units
there are 12 more boys than girls
so n.o of girls
= n.o of boys - 12
= 2u - 12
total (boys+girls+adults) = 288
1u+2u+2u-12 = 288
5u - 12 = 288
add 12 to both sides
(to remove 12 from (5u-12)
5u-12 +12 = 288+12
5u = 300
1u = 300÷5 = 60
n.o of girls = 2u-12 = 2x60-12 =120-12 =108
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hehe
Hehe's answer
21 answers (A Helpful Person)
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Yalinee
Yalinee
1 week ago
Thank you
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HiderApplecross
Hiderapplecross's answer
802 answers (Tutor Details)
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