Karen started painting the walls at = 9.25 am
she said that she would finish the job at = 2:35 pm
So, she predicted a total of = 5 hours 10 minutes or 310 minutes
Her mother said that three fourths of that time was enough to paint the walls= [tex]\frac{3}{4}\times310= 232.5[/tex] minutes
When Karen finished the job, they noticed that it actually took her 2/3 of an hour longer than the time predicted by the mother.
[tex]\frac{2}{3}\times60=40[/tex] minutes so it is=[tex]232.5+40=272.5[/tex] minutes
So, Karen predicted [tex]310-272.5=37.5[/tex] minutes extra
To find it in hours= [tex]\frac{37.5}{60}= 0.625[/tex] or in fractions it is [tex]\frac{5}{8}[/tex] of an hour
Answer:
Starting time for painting =9.25 am
Predicted time to finish the job i.e painting=2:35 pm
So, total time taken= i.e time between 9:25 am to 2:35 pm=5 hours 10 minute
= 310 minute
Time predicted by her mother=[tex]\frac{3}{4}\times310[/tex]
=232 minutes 30 seconds
Actual time taken = Time predicted by her mother+Extra time(2/3 of 1 Hour)
= 232 minutes 30 seconds + 40 minutes
= 272 minutes 30 seconds
Difference in time=Time predicted by karen - Actual time taken
=310 minute-272 minutes 30 seconds
= 37 minutes 30 seconds
Converting the result in hour= [tex]\frac{75}{2\times60}[/tex]
= 5/8 hour
