<PRE><B>Question 1201888</B>
Priscillla is ( x — 1 ) years old now . How old will she be on


i : in 8 years time

Add 8 years to present age ( integer addition)

(x-1)+8
x-1+8
=(x+7)

ii : 4 years ago

Subtract 4 years from present age
(x-1) -4

x-1-4

x-5 years

???
iii : if her age in 8 years times is three times her age  4 years ago how old is she now ?

4 years ago age = x-5

After 8 years age = x+7 years

3(x-5) = x+7
3x-15 = x+7
add 15 to both sudea

3x-15+15 = x+7+15

3x = x+22

Subtract x  from both sides
3x-x = x+22-x

2x =22

divide both sides by 2

2x/2 = 22/2

x=11

Her present age is (x-1) plug x=11

11-1 = 10 years

Her present age is 10 years



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