Question

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 63 miles per hour. Then, in the second hour, she traveled at a speed of 66 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent.
4.8%
95.2%
4.5%
95.5%

Answer 1

@dtan5457

Answer 2

Same thing as before.

Subtract new value from old

66-63

Answer 3

3 divided by original value of 63 is>?

Answer 4

63 of ___ = 3

63 => the original price
___ => the percent (which you are trying to find)
3 => the amount in which the price was increased by

Answer 5

@dtan5457

Answer 6

You went up 3 mph..

Basically your trying to find out how much faster or what percentage 3 is of 63<<the original speed

Answer 7

therefore

3/63=?

Answer 8

but the answer isn't on thier @dtan5457

Answer 9

To solve for the blank, you use this equation.
\[\frac{ is }{ of }=\frac{ percent }{ 100 }\]

Remember that "is" is substituted for the value after the equal sign (in this case it is 3).
"of" is substituted for the original value (which is 63)

\[\frac{ 3 }{ 63 }=\frac{ x }{ 100 }\]

You can solve for x by cross-multiplying.
\[3 \times 100 = 300\]
\[63 \times x = 63x\]

So you have 300 = 63x.

Divide 300 by 63 to get the quotient. And then move the decimal place two places to the right to get your answer.

Answer 10

The answer IS on there, you just have to round the decimals.

Answer 11

0.04761904761

Round that..^

Answer 12

0.48

Answer 13

Wait. But you move the decimal place two places to the right and then round to the nearest tenths.

Answer 14

so 4.8 is the answer

Answer 15

Since you are converting from a decimal to a percent.

Answer 16

Yes

Answer 17

correct @Samara8954