Asked by Eniola

If 3,x,y,18 are arithmetic progression. Find d value of x and y

Answers

Answered by Damon
well
x = 3 + d
y = 3 + 2 d
18 = 3 + 3 d
--------------------------
d = (18 -3)/3 = 15/3 = 5
I suspect you can find x and y now :)
Answered by Reiny
x-3 = y-x = 18-y
a=3
x=3+d
y = 3+2d
18=3+3d ---> 6 = 1+d
d = 5
then we have 3,8,13,18

or there are 3 differences from 3 to 18
or (18-3)/3 = 5
then form your sequence
Good work
Answered by Serina
Don't understand the answer
Answered by Marvellous
I need a very clear explanation pls
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