Hey guys.... pls answer me these 2 questions....if u don't know the answer don't try to answer..for the sake of points because I have mathematics test tmrw...
1.The number 8000 is first increased by 20% and then decreased by 20%.Find the resulting number
2.The number 12000 is first decreased by 25% and then increased by 25%.Find the resulting number
answer me....pls
Answers
Answered by
1
Answer:1st one
Step-by-step explanation:
(8000×20)/100=1600
8000+1600=9600
(9600×20)/100=1920
9600-1920=7680
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2nd
The resulting = The original number x (1 - (25/100)) x (1 + (25/100)) = 12000 x (75/100) x (125/100) = 11,250
Answered by
1
1. Number 8000 is increased by 20%=8000*20/100=800*2=1600
=8000+1600=9600
Then decreased by 20%=9600*20/100
=960*2=1920
=9600-1920=7680
2. Number 12000 decreased by 25%
=12000*25/100=12000/4=3000
=12000-3000=9000
Number increased by 25%=9000*25/100=2250
=9000+2250=11250
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