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Secondary 1 | Maths
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Diksha
Diksha

Secondary 1 chevron_right Maths chevron_right Singapore

Pls help

Date Posted: 5 days ago
Views: 86
sstrike
Sstrike
5 days ago
(a)

15 = 3 × 5
105 = 3 × 5 × 7
525 = 3 × 5 × 5 × 7

LCM(15 , x , 105)=525

x=3 × 5 × 5 = 75
OR
x=5 × 5 = 25

(b)

HCF(A,B)
= 60 = 2² × 3 × 5

A+B
= 480 = 2³× 2² × 3 × 5
= 2² × 3 × 5 × (1+7)
= 2² × 3 × 5 × (3+5)

Ans :
( 60 , 420)
(180 , 300)

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sstrike
Sstrike's answer
5577 answers (A Helpful Person)
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Diksha
Diksha
1 day ago
Thank you for the help