How much more time did maria spend doing research than checking email ? doing research = 30% using email = 15%

Solution:

we have been asked to find

How much more time did Maria spend doing research ?

Maria spends doing research = 30%
and using email = 15% of a day (24 hours)

Time spent on research = 30% of 24 =

Time spent on checking email = 15% of 24 =

so,

Hence , Maria spends 3.6 hours more on doing research than checking email.