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## Question

primary 5 | Maths
| Whole Numbers

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Please help me to solve this question

And let u represent 'units'

At first:

EB= 6u

F= 1u

End:

EB= 70 sheets of paper

F= 70 sheets of paper

since the total is 7u (6u+1u), an equal number of sheets of paper each (70 sheets of paper each) means:

EB= 3.5u

F= 3.5u

Hence, 3.5u= 70

1u= 70 ÷3.5

= 20

Sheets of paper EB has to give to F = 6u-3.5u= 2.5u

2.5u = 20×2.5

= 50

Ans: 50

Hope this is correct!! :)

A slightly different approach :

Eng Bok : 6 units

Fred : 1 unit

Total : 7 units

if they each have 70 sheets,

Total = 70 + 70 = 140 sheets

Notice the total doesn't change.

So 140 sheets = 7 units

1 unit = 140 ÷ 7 = 20 sheets

So Fred has 20 sheets (1 unit)

Number of sheets Eng Bok must give to Fred

= 70 - 20

= 50 sheets.

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