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Question
primary 6 | Maths
| Ratio
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Date Posted: 4 years ago
Views: 560
after
A: 105
B
o : r = 5 : 6 = 10 : 12
B: 22u
total in 2 boxes = 22u+105
at first
B
o : r = 2 : 1 = 10 : 5
7u = half of Aroses at first
at first
A
o : r = 3 : 4 = 10.5 : 14
r = 14u
o = 10.5u = 21u/2
after
A
21u/2 + 7u = 105
35u/2 = 105
1u = 6
transfer = 6 x 7 = 42
B = 22 x 6 = 132
.
.
.
check!
at first
A = 147
Ao = 63
Ar = 84
B = 90
Bo = 60
Br = 30
after
Ao = 63
Ar = 84/2 = 42
A = 105
Bo = 60
Br = 30+42 = 72
B = 132
.
.
.
A: 105
B
o : r = 5 : 6 = 10 : 12
B: 22u
total in 2 boxes = 22u+105
at first
B
o : r = 2 : 1 = 10 : 5
7u = half of Aroses at first
at first
A
o : r = 3 : 4 = 10.5 : 14
r = 14u
o = 10.5u = 21u/2
after
A
21u/2 + 7u = 105
35u/2 = 105
1u = 6
transfer = 6 x 7 = 42
B = 22 x 6 = 132
.
.
.
check!
at first
A = 147
Ao = 63
Ar = 84
B = 90
Bo = 60
Br = 30
after
Ao = 63
Ar = 84/2 = 42
A = 105
Bo = 60
Br = 30+42 = 72
B = 132
.
.
.
See 1 Answer
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Date Posted:
4 years ago
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