4 years ago

A student skipped a step when she tried to convert 15 hours to seconds,and she got the following incorrect result ?

Mathematics

2 answers:

zheka24 [161]4 years ago

8 0

Answer:

60mins/1 hour

Step-by-step explanation:

Gelneren [198K]4 years ago

3 0

She did not convert 1 minute into 60 seconds. and 15 hours in seconds.
she did it like this:
15min ×60 seconds/1 min
900 seconds.
The SI unit of time is second so she should have converted the hours and minutes into seconds first and then start the calculation.

You might be interested in

What percent of 72 is 27?

Alina [70]

if we take 72 as the 100%, what is 27 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 72&100\\ 27&x \end{array}\implies \cfrac{72}{27}=\cfrac{100}{x}\implies \cfrac{8}{3}=\cfrac{100}{x}\implies 8x=300 \\\\\\ x=\cfrac{300}{8}\implies x=\cfrac{75}{2}\implies x=37.5$