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primary 5 | Maths | Fractions
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Sid
Sid

primary 5 chevron_right Maths chevron_right Fractions chevron_right Singapore

Please solve the problem

Date Posted: 3 years ago
Views: 232
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sstrike
Sstrike
3 years ago
Ans: 30

【difference unchanged】concept

now
B:R:R-B = 5:7:2

6 yrs ago
B:R:R-B = 2:3:1 = 4:6:2

5-4 = 7-6 = 1 unit → 6 yrs

now
B →5×6 = 30 (Ans)

check
now
B:R:R-B = 5:7:2
= 30:42 : 12

6 yrs ago
B:R:R-B
= 24:36 : 12
= 2:3:1 ✓✓✓

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sstrike
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Sid
Sid
3 years ago
Thanks a lot
Sid
Sid
3 years ago
Thanks a lot
sstrike
Sstrike
3 years ago
welm

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