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primary 6 | Maths
| Data Analysis
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for my friend
Date Posted: 3 years ago
Views: 519
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2 Tables + 20 Chairs = $840 — (1)
She spends $120 more on the tables than the chairs;
2 Tables = $120 + 20 Chairs — (2)
From (1),
2 Tables = $840 - 20 Chairs — (3)
(2) = (3)
$120 + 20 Chairs = $840 - 20 Chairs
20 Chairs + 20 Chairs = $840 - $120
40 Chairs = $720
1 Chair = $18
She spends $120 more on the tables than the chairs;
2 Tables = $120 + 20 Chairs — (2)
From (1),
2 Tables = $840 - 20 Chairs — (3)
(2) = (3)
$120 + 20 Chairs = $840 - 20 Chairs
20 Chairs + 20 Chairs = $840 - $120
40 Chairs = $720
1 Chair = $18
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