Two is thirty-one, divided by the sum of a number and four. Find the number.

A. 11.5

B. - 15.5

C. 13.5

D. none of the above

To answer the question, let x be the number. The equation that is described in the given is,

2 = 31 / (x + 4)

The value of x from the given equation is 11.5. Thus, the answer to this item is letter A.

2 is 31 didivded by the sum of a number and 4

translate

2 (2) is (=) 31 divded by (31/) the sum of a number and 4 (x+4)

2=31 / (x+4)

times both sides by x+4

2 (x+4) = 31

divide both sides by 2

x+4=15.5

minus 4 from both sides

x=11.5

A is answer