Question

From 3 hours to 30 minutes Percentage

Answer 1

What are u asking ? 30 minutes of 3 hrs the fraction would be 2/6 simplified would be 1/3 and the percentage would be 33.3 repeating percent

Answer 2

Answer: A decrease to 30 minutes from 3 hours corresponds to a 83.3% relative decrease, or a reduction to a time period that is 16.7% of the original period (depending on a more precise meaning of your question, see below)

Steps:

Relative decrease from y to x:

100*(y-x)/y in %

So y = 3 hr and x = 30 min. Rewrite to fractions: x=6/2 hr, y=1/2 hr

rel decrease =  $100\cdot\frac{\frac{6}{2}-\frac{1}{2}}{\frac{6}{2}}=100\cdot\frac{5}{6}=83.\overline{3}\%$

Percentage of reduced time period:

the 30 minutes time period corresponds to $\frac{\frac{1}{2}}{\frac{6}{2}}=\frac{1}{6}$ of the full period of 3hr, or 16.67% (this is in case your question was asking for the percentage the remaining amount represents of the total amount).

Let me know if you have questions.