Answer:
The percentage is 17% and the rotio is 7.5
Explanation:
(a) 28000-20000=8000.
(8000/28000+20000)*100%
=16.66%=17%
(b) (28000/48000)
= 7/12.
(20000/48000)
=5/12.
so you take the numerators which are 7 and 5.so the ratio is7.5
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