Sophia babysat for 3 5/12 hours on Friday. She babysat for 2 5/6 hours on Saturday. For the following statements, estimate how long Sophia babysat on Friday and Saturday combined. Choose the correct benchmarks and sum.

Answer:
the answer is c for Friday and 6 3/12 hours for them both combined
Step-by-step explanation:
because 3 5/12 is closest to 3 1/2=3 6/12
for fir day and Saturday day combined it would be 6 3/12
because 5/6 is 10/12 and 5/12 + 10/12 is 15/12 which is also 1 3/12
so add 3 +2=5 and then add the fraction 1 3/12 which would be 6 3/12 hours