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教育王國 討論區 小學雜談 Aaron present age is x
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Aaron present age is x [複製鏈接]

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1077
1#
發表於 11-8-18 14:02 |只看該作者 |倒序瀏覽 |打印
Aaron present age is x
Jacky age is three times Aaron express in terms of x jacky present age
Express in term of x jacky age in 10 years
Jacky age will be four times Aaron present age in ten years
Write down an equation involving x
Solve the equation n © Hence find their present ages
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6566
2#
發表於 11-8-18 14:16 |只看該作者
A= X J= 3X

3X+10 = 4X
10=4X-3X
10= X

Aaron is 10 and Jacky is 30
in 10 year, jacky will be 40 which is 4 times of Aaron's present age

may i know how old your kid is?

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1077
3#
發表於 11-8-18 23:33 |只看該作者
sheffield :  Thanks~~
She is 11 years old.

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1077
4#
發表於 11-8-18 23:33 |只看該作者
sheffield :  Thanks~~
She is 11 years old.

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6566
5#
發表於 11-8-19 11:03 |只看該作者
原帖由 BingoJoey 於 11-8-18 23:33 發表
sheffield :  Thanks~~
She is 11 years old.

唔客氣,11歲小朋友做都正常d…
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