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## Question

primary 6 | Maths
| Data Analysis

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nb: 1u

p: 4u

e: 3u

cost

nb + p + e = 62.40

nb + 9.60 = p

e + 4.80 = nb

nb + nb + 9.60 + e = 62.40

nb + nb + 9.60 + e = 62.40

e + 4.80 + e + 4.80 + 9.60 + e = 62.40

e = 14.40

nb = 19.20

p = 28.80

unit cost

nb = e + 2.40

19.20/u = 14.40/3u + 2.40

19.20/u = 4.80/u + 2.40

u = 6

24 pencils bought

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