At time=3 hours percentage of A is 2%. At time= 5 hours percentage of A is 8%. How do I calculate the rate of increase of A during the time period from 3-5 hours?
Can someone please explain this as I am not good with percentages.
2026-03-30 20:47:42.1774903662
Finding rate of increase
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At 3, we have $0.02A$ and, at 5, we have $0.08A$, which correspond to $2\%$ and $8\%$, respectively. The rate of increase is then
$$\frac{0.08A - 0.02A}{0.02A} = 3.$$
Thus, the increase during the two hours is $3$ times $0.02A$.