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nevsk [136]
3 years ago
13

A tumor in a rat responds to a new radiation treatment by shrinking 5% with each treatment. How many treatments before the tumor

has shrunk to a quarter of its original size?
Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0
A quarter of its original size would be 25% of 100%, right? Therefore, the tumor would have to shrink 75%. If each treatment, the tumor shrinks 5% that would mean it takes 15 treatments to shrink 75 percent. 

If this helped, please thank, rate, and give brainliest answer!
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