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andrewmena05
02.08.2019 •
Mathematics
Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease
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Ответ:
A change from 20 to 40 is 100% increase because:
If 20 is the number starting up and is the original number, then 20 would equal 100%
40-20=20 An extra 20 is equal to 100%. 20=100%, so it's own number added to itself would make it an increase.
A change from 40 to 20 is a 50% decrease because:
40/2= 20
Half of 40 is 20. Half of a number is equal to 50%.
I hope this helps!
~kaikers
Ответ:
choose numbers and see which satisfies the statement and the equation.
I cant see the options, so i cant tell you which one is the answer.
Step-by-step explanation: