Question

When the number is increased by 30% it becomes 70

Answer 1

Answer:

Step-by-step explanation:

Let the number be x

4 times of a number=4x

4 times a number is increased by 30=4x+30

70 is decreased by a number=70-x

4 times a number is increased by 30 is same as 70 is decreased by a number

4x+30=70-x

adding x on both sides to simplify

4x+x+30=70-x+x

5x+30=70

subtracting 30 from both sides

5x+30-30=70-30

5x=40

dividing both sides by 5 to free up x

5x/5=40/5

x=8

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BY Tolety Roshan