Maths of the percentage - some difficult questions - (15)

👨🏻‍🏫 學術台數學

用戶11457

2006-11-17 2:47 am

Maths of the percentage - some difficult questions - (15)

It is given that 5a=4b. What percentage of b is a? What percentage of a is b?

回答 (2)

小李飛刀

2006-11-17 3:38 am

✔ 最佳答案

It is given that 5a=4b.
What percentage of b is a?
a=(4/5)b
4/5*100%
=80%
What percentage of a is b?
b=(5/4)a
5/4*100%
=125%

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vegitou

2006-11-17 2:51 am

5a=4b
a=4b/5
a=80% of b

4b=5a
b=5a/4
b=125% of a

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