Question

When Jonas does his math homework, he spends an average of 2 minutes on each problem. Last night he spent 1.6 hours on his non-math homework, plus he completed 5 math problems. Approximately how much time did Jonas spend in total on all of his homework last night?
A.
1.3 hours
B.
2.7 hours
C.
1.8 hours
D.
2.2 hours

Answer 1

Answer:

C.  

1.8 hours

Step-by-step explanation:

total homework time = math homework time + non math homework time

math homework time = 5 problems * 2 minutes/problem

                                   = 10 minutes

                                     = 10 minutes * 1hr/60 minutes = .167 hrs

non math homework time = 1.6 hours

total homework time = math homework time + non math homework time

total homework time = .167 + 1.6

total homework time = 1.77 hrs

rounding

total homework time = 1.8 hrs