AC Lim's answer to poppins's Secondary 1 Maths Singapore question.
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Darius = 2² × 5 = 20
Date Posted:
11 months ago
what did i do wrong?
possible age for Darius are
2² × 3 × 5 or
2² × 3² × 5 or
2² × 5
So less than 30 is 2² × 5
Elaine = 2 × 3²
Darius= 2² × ( )× 5
LCM = 2² × 3² × 5
2² × 3 × 5 or
2² × 3² × 5 or
2² × 5
So less than 30 is 2² × 5
Elaine = 2 × 3²
Darius= 2² × ( )× 5
LCM = 2² × 3² × 5
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