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primary 5 | Maths
| Whole Numbers
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I do not know whether this is a whole number question but I need a solution and answer. Thanks
Date Posted: 2 years ago
Views: 490
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Grouping concept.
For every 5 pens sold, another 2 are given free.
The 7 pens here can be counted as 1 group.
Cost of 1 such group = $2 × 5 = $10
He wants to buy 65 pens. How many of such groups can he buy at most?
65 ÷ 7 = 9 R 2
So he can buy 9 groups (9 × 7 = 63 pens) and the remaining 2 pens are bought at individual price.
9 × $10 + 2 × $2
= $90 + $4
= $94 (answer)
For every 5 pens sold, another 2 are given free.
The 7 pens here can be counted as 1 group.
Cost of 1 such group = $2 × 5 = $10
He wants to buy 65 pens. How many of such groups can he buy at most?
65 ÷ 7 = 9 R 2
So he can buy 9 groups (9 × 7 = 63 pens) and the remaining 2 pens are bought at individual price.
9 × $10 + 2 × $2
= $90 + $4
= $94 (answer)
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