Question

Alison's age is 10 more than half of Sam's age. Using S to represent Sam's age, write an expression that represents Alison's age.

a) 1/2(S+10)
b) 10-1/2S
c) S+1/2(10)
d)1/2S+10​

Answer 1

D

Explanation:

Let's pretend to use 6 as Sam's age.

Six divided by two is three, plus ten is 13.

Now let's work it backwards.

"half of Sam's age"

S/2

"Alison's age is 10 more"

+10

Put these together and it's S/2+10.