Question

Ritu spends 1 hour 20 minutes 15 seconds to decorate a photo using quilling. She spends another 55 minutes decorating a small frame. How much time did Ritu spend on decorating the photo frames?

Answer 1

Hint: Convert the hours into minutes and then into seconds, convert the minutes given in the question into seconds to solve the problem easily. Add the time required to make a photo and a small frame. The result will be in seconds. Convert the result again into minutes and hours.

Complete step-by-step answer:
We are given that Ritu spends 1 hour 20 minutes 15 seconds to decorate a photo using quilling art.
Convert the time completely into seconds.
1 hour= 60 minutes.
1 minute= 60 seconds.
1 hour = 3600 seconds.
1 hour 20 minutes 15 seconds =?
 $
  \left( {60 \times 60} \right) + \left( {20 \times 60} \right) + 15 \\
   = 3600 + 1200 + 15 \\
   = 4815 seconds \\
  $
We are also given that Ritu spends 55 minutes to decorate a small frame.
Convert the time into seconds.
1 minute=60 seconds.
55 minutes=?
 $
  55 \times 60 \\
   = 3300 seconds \\
  $
Total time Ritu spent on decorating the photo frames is $ 4815 + 3300 = 8115 $ seconds.
Convert 8115 seconds into minutes and hours.
 $ \dfrac{{8115}}{{60}} = 135\min 15\sec $
8115 seconds is 135 minutes and 15 seconds.
Convert 135 minutes into hours.
 $ \dfrac{{135}}{{60}} = 2 hours 15\min $
Therefore, 8115 seconds is equal to 2 hours 15 minutes 15 seconds.
Total time Ritu spent to decorate the photo frames is 2 hours 15 minutes 15 seconds.

Note: Time is defined as a continuous sequence of events from the past to the present to the future. Every measurement of time is related to other measurements of time. Time is measured in minutes, seconds, hours, days, weeks, years.