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Primary 4 | Maths
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Date Posted: 5 years ago
Views: 231
Total amount is unchanged.
Let Janet be 5 units, Ken be 1 unit.
Total = 6 units
After giving $2450 to Ken,
Ken = 3 units, Janet = 1 unit.
Total = 4 units
Since total amount is unchanged,
make the units the same.
Janet 5 units, Ken 1 unit, Total 6 units
→ ×2 → Janet 10 units, Ken 2 units, Total 12 units
Janet 1 unit, Ken 3 unit, Total 4 units
→ ×3 → Janet 3 units, Ken 9 units, Total 12 units
From above we can see that Janet gave Ken 7 units.
7 units = $2450
1 unit = $2450 ÷ 7 = $350
Amount Ken had at first = 2 units
= $350 x 2 = $700
Let Janet be 5 units, Ken be 1 unit.
Total = 6 units
After giving $2450 to Ken,
Ken = 3 units, Janet = 1 unit.
Total = 4 units
Since total amount is unchanged,
make the units the same.
Janet 5 units, Ken 1 unit, Total 6 units
→ ×2 → Janet 10 units, Ken 2 units, Total 12 units
Janet 1 unit, Ken 3 unit, Total 4 units
→ ×3 → Janet 3 units, Ken 9 units, Total 12 units
From above we can see that Janet gave Ken 7 units.
7 units = $2450
1 unit = $2450 ÷ 7 = $350
Amount Ken had at first = 2 units
= $350 x 2 = $700
See 1 Answer
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Date Posted:
5 years ago
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