Question

An amount doubles in 10 years , then the same amount will triple in how many years ? ​

Answer 1

Answer:

20 years

Step-by-step explanation:

suppose the amount is x , and after 10 years it will become 2x=x+x

similarly, after 20 years the ammount will become 3x=x+x+x

and after 30 years the amount Will become

4x=x+x+x+x

All in sort that after every 10 years the amount x is added to the starting or principal value.

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