Answer:
5 1/2 weeks
Step-by-step explanation:
Given
Time it will take to complete the building = 85 1/4 hrs
Time he works on the house weekly = 15 1/2 hours
This can be expressed as
1 week = 15 1/2 hours
To calculate the number of weeks it will take to complete the house, we will say:
x = 85 1/4
Cross multiply
15 1/2 x = 85 1/4
31/2 x = 341/4
31x/2 = 341/4
Cross multiply again
31x * 4 = 2 * 341
124x = 682
x = 682/124
x = 5.5weeks
Hence it will take Ryan 5 1/2 weeks to complete the house.
