If a girl cuts the grass in 3 hours and a boy cuts it in 2 hours what would be the time if they cut it toghther.? a).50 minutes b).1 hour and 5 minutes c).1 hour and 12 minutes d.5 hours

d

Step-by-step explanation:

the answer is d because if you do 3+2 it equals 5 so therefore it is b

d) hope this helps

Step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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