An old cell phone battery would last for 16 hours. The new battery lasts 25% longer. How long will the new battery last?​

20 hours

Step-by-step explanation:

To find the answer, you first should find out how long is 25% of the original battery life, 16 hours. To find this, you can divide 16 by 4, or multiply 16 by 0.25. Either works.

16/4=4.

So the new battery lasts 4 hours more than the old battery. Then, add this to the original length to find how long the new battery will last in total.

16+4=20

answer by yourhope:

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(x) - (y) = (1 + 4i)