If 10% of 23 is 2.3 and 10% of 345 is 34.5, we can say that the product is the same
number as the base with its decimal point move once from right to left. Then give your
idea in getting 20% of a number?
number as the base with its decimal point move once from right to left. Then give your
idea in getting 20% of a number?
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Answer:
double the number and then work out 10%