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Question
primary 6 | Maths
| Ratio
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Pls help
Date Posted: 4 years ago
Views: 424
for (a), ducks no change
at first
d : f = 2 : 3
after + 3 f
d : f = 1 : 2 = 2 : 4
4u - 3u = 1u
1u = 3
so 6 ducks
for (b), frogs no change at 12
at first
d ; f = 6 : 12
after 4 d left
d ; f = 2 : 12 = 1 : 6
.
.
.
at first
d : f = 2 : 3
after + 3 f
d : f = 1 : 2 = 2 : 4
4u - 3u = 1u
1u = 3
so 6 ducks
for (b), frogs no change at 12
at first
d ; f = 6 : 12
after 4 d left
d ; f = 2 : 12 = 1 : 6
.
.
.
See 1 Answer
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