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primary 5 | Maths | Whole Numbers
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Sonia
Sonia

primary 5 chevron_right Maths chevron_right Whole Numbers

Please help me to solve this question

Date Posted: 1 year ago
Views: 74
Teng
Teng
1 year ago
Let EB be Eng Bok and F be Fred.
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!! :)
J
J
1 year ago
The above method and answer 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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Johnson Poon
Johnson Poon's answer
72 answers (A Helpful Person)
1st
Algebra method :)