AC Lim's answer to Wincy's Primary 6 Maths Data Analysis Singapore question.
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This is duck remain unchanged question.
So we made duck to same unit, 6u
Case 1,
2 chickens + 3 ducks left 50 chickens
(Made duck to 6u) by multiply 2u
4u chickens + 6u ducks left 50 chickens
Case 2,
3 chickens + 2 ducks left 25 chickens
(Made ducks to 6u) by multiply 3u
9u chickens + 6u ducks left 25 chickens
The number of chickens for case 1 and case 2 is same.
Therefore,
4u + 50 = 9u + 25
25 = 5u
1u = 5
So we made duck to same unit, 6u
Case 1,
2 chickens + 3 ducks left 50 chickens
(Made duck to 6u) by multiply 2u
4u chickens + 6u ducks left 50 chickens
Case 2,
3 chickens + 2 ducks left 25 chickens
(Made ducks to 6u) by multiply 3u
9u chickens + 6u ducks left 25 chickens
The number of chickens for case 1 and case 2 is same.
Therefore,
4u + 50 = 9u + 25
25 = 5u
1u = 5
Date Posted:
2 years ago
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