Question
A number changes from -20 to 30. What is the increase or decrease in the number?
✓
Answer
∵ A number changes from = - 20 to 30
⇒ - 20 – 30 = - 50
∴ - 50, it will be increases.
⇒ - 20 – 30 = - 50
∴ - 50, it will be increases.
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