Answer:
.878787.. to a fraction is 29/33
Step-by-step explanation:
= 87/99
Simplify 87/99, which is 29/33
If the bacteria is tripling every 10 minutes, that means the "rate of increase" on that period is 200%, so if say the current amount is "c", 200% of "c" is just 2c, so c + 2c is 3c, a tripled amount.