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Question
primary 5 | Maths
| Whole Numbers
2 Answers Below
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Please help me with this 2 questions. Need it very urgently. Thx in advance.
Date Posted: 2 years ago
Views: 314
Q(1)【pair】
2b = 3m
6b = 3×2b = 3×3m = 9m
6b+5m = 9m+5m
= 13m = $91
m = $91÷13 = $7
2b+3m = 3m+3m
= 6×$7
= $42 (Ans)
Q(2)【total($ of present) unchanged】
M:N+O : P = 1:4:5
= 8 : 32 : 40
N:M+O : P = 3:5:8
= 12 : 20 : 40
O = P-(M+N)
= 40-(8+12) = 20
O-N = 20-12
= 8 units → $90
40×$90÷8 = $450 (Ans)
2b = 3m
6b = 3×2b = 3×3m = 9m
6b+5m = 9m+5m
= 13m = $91
m = $91÷13 = $7
2b+3m = 3m+3m
= 6×$7
= $42 (Ans)
Q(2)【total($ of present) unchanged】
M:N+O : P = 1:4:5
= 8 : 32 : 40
N:M+O : P = 3:5:8
= 12 : 20 : 40
O = P-(M+N)
= 40-(8+12) = 20
O-N = 20-12
= 8 units → $90
40×$90÷8 = $450 (Ans)
For Q2 how do you get 40?
Sorry to ask but I just want to understand your working better. *^*
Thx a lot for asking
Total unchanged
LCM(5,8)→40
Total unchanged
LCM(5,8)→40
Oh. I understand. Thank you!
Welcome
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Date Posted:
2 years ago
Thanks!
Welcome
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Date Posted:
2 years ago
Thx.
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