A number is first increased by 30 and then decreased by 20 . Find the net change in the number
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Answer:
+10 is the answer
Step-by-step explanation:
30-20=10
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Therefore the number is increased by 10.
Step-by-step explanation:
Let the number be x.
First the number is increased by 30.
Then the number becomes = x+30
Then the number is decreased by 20.
The new number is = (x+30-20)
=(x+10) [ like terms are added]
The difference between new number and original number is
=(x+10-x)
=10
Therefore the number is increased by 10.
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