John was building a new fence, and he wants it to stand 8 1/2 feet ?

Question

above ground level. To make sure it is secure he must place it 2 3/4 feet into the ground. How long of a post should john buy?

a) 10 1/2 feet 72

b) 10 3/4 feet 84

c) 11 1/2 feet

d) 11 1/4 feet

e) 11 feet

Answer 1

Answer is D.  2 3/4 + 8 1/2 is the sum you need to do to get the answer.  8 + 2 is 10 and 1/2 + 3/4 can be worked out by splitting the 1/2 into 2 quarters and adding it to the 3/4.  3/4 + 2/4 is 1 1/4.  Add the 1 1/4 to 10 and you get 11 1/4.

Answer 2

D

8.5 feet above ground + 2.75 below

11.25

Answer 3

D,  11 1/4  feet.

Answer 4

D

I am very sure

round the denominator of the 1/2 to 4..

2/4+3/4= 5/4

5/4= 1 and 1/4

1 and 1/4 + 8 + 2 = 11 and 1/4

Answer 5

subtract each answer from 2 3/4 and if it gets 8 1/2 it works :)

Answer 6

The answer is D. But he only needs to put the post in about 1.5 ft. This will be strong enough.

Answer 7

D but that's cheating

Answer 8

8.5 feet plus 2.75 feet = 11.25 feet

D

_/

Answer 9

d

Answer 10

c...11 1/2 feet.