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primary 5 | Maths
| Whole Numbers

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The total cost of 4 similar tables and 16 similar chairs is $945. A table cost thrice as much as a chair.How much will 4 such chairs cost?

4 tables and 16 chairs cost $945.

Table is 3 times the cost of a chair. This means that the 4 tables cost as much as 12 chairs.

Let’s pretend the person replaces the 4 tables with 12 chairs. There is no change to the price. Altogether, 28 chairs are being bought for $945.

Cost of 1 chair

= 945 / 28

= $33.75

and the cost of 1 table

= $33.75 x 3

= $101.25

So, cost of 4 chairs

= $33.75 x 4

= $135

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