Question

Thomas walks his dog for 15 minutes today- 5 more minutes than yesterday. Express as a percent his walking time today compared to his walking time yesterday. Round to the nearest percent.

A) 125%
B) 200%
C) 133%
D) 150%

(I understand how to do this, but apparently I am using the wrong numbers and get something way under these percents.)

Answer 1

I think A or B not sure witch one tho

Answer 2

today - 15 min
yesterday - 10 min


% age walking time today compared to his walking time yesterday
\(\large\tt \begin{align} \color{black}{
today=yesterday\times \dfrac{x}{100}\%\\
15=10\times \dfrac{x}{100}\%\\
x\%=\dfrac{1500}{10}\\
x\%=150\\
}\end{align}\)