Question

Which expression has the sum of 11/12

A. 1/12+5/12+5/12

B. 5/4+3/4+3/4

C. 5/6+6/6

D. 10/12+2/12


I’m 13 and don’t understand this at all.

Answer 1

A. 1/12+5/12+5/12

Explanation:

From the given options; let us calculate the fractions and see which one tallies with 11/12

a)
`(1)/(12)+ (5)/(12) + (5)/(12)`

The lowest common multiple (L.C.M) here is 12 because 12 goes in all the denominators.

So;

`= (1+5+5)/(12)`

`= (11)/(12)`

b)

`(5)/(4)+(3)/(4)+(3)/(4)`

Here, the lowest number that can be divisible by the denominators is 4

`=(5+3+3)/(4)`

`=(11)/(4)`

c)

`(5)/(6)+(6)/(6)`

`=(5+6)/(6)`

`=(11)/(6)`

d)

`(10)/(12)+(2)/(12)`

`=(10+2)/(12)`

`= (12)/(12)`

= 1

Thus, from the given options, the expression that has the sum of 11/12 is option A.