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lyudmila [28]
3 years ago
7

Ryan is building a treehouse . It will take 85 & 1/4 hours to complete. He can work on the tree house 15 & 1/2 hours eac

h week . To the nearest tenth , how many weeks will it take Ryan to complete the tree house
Mathematics
1 answer:
Gnoma [55]3 years ago
6 0

Answer:

<em> 5 1/2 weeks </em>

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

<em>Hence it will take Ryan 5 1/2 weeks to complete the house</em>.

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