If 20% of 40% of a number is 10 greater than half the number what is the number

Let the number is x

Now going with the statement of the question

20% of 40% of x is 10 greater than half of x

So

Subtract from both sides

Multiply 100 on both sides

Divide both sides by -42

x=

tip $2.90

total $17.40

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