To determine how much Mrs. Hayakawa would save by walking to and from work instead of riding the bus, let's first calculate the cost of riding the bus for five weeks.
- Bus fare per trip (one way): $2.40
- Cost for a round trip (to and from work): $2.40 x 2 = $4.80
- Number of trips per week: 2 trips per day x 5 days = 10 trips
- Total cost for one week: $4.80 x 5 days = $24.00
- Total cost for five weeks: $24.00 x 5 = $120.00
If Mrs. Hayakawa walks to and from work instead of taking the bus, she will not incur any bus fare expenses.
Thus, the benefit (savings) from walking instead of riding the bus for five weeks would be $120.
The correct response is: Mrs. Hayakawa would save $120.