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Help Christy Laurel! Anyone can contribute an answer, even non-tutors.
Hi, how can I solve this question? My teacher also doesn’t know how to solve it. Please help
Date Posted: 5 years ago
Views: 360
LCM = 80 = 2⁴ x 5
HCF = 8 = 2³
Both numbers must contain the HCF.
Since LCM has a 5, one of the numbers has a factor 5 but the other doesn't.
Notice that the LCM also has a 2⁴. So one of the numbers must have a 2⁴ but the other doesn't.
possible numbers :
1st number : 2⁴ = 16
2nd number : 2³ x 5 = 40
1st number : 2³ = 8
2nd number : 2⁴ x 5 = 80
HCF = 8 = 2³
Both numbers must contain the HCF.
Since LCM has a 5, one of the numbers has a factor 5 but the other doesn't.
Notice that the LCM also has a 2⁴. So one of the numbers must have a 2⁴ but the other doesn't.
possible numbers :
1st number : 2⁴ = 16
2nd number : 2³ x 5 = 40
1st number : 2³ = 8
2nd number : 2⁴ x 5 = 80
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