Question

Arthur is trying to figure out the heights of 3 of his friends. Here are the facts he know:

1. The sum of the heighta oglf these 3 friends is 17 fast 8 inches.

2. The shortest friends is 5 feet 6 inches tall
3. The other 2 friends differ in height by 4 inches

How tall is the tallest friend?

Answer 1

Alright let friend one be represented by x, freind two by y and friend three by z.

So 17feet 8 inches needs to be converted.

Write out all that you know in algebra formulas.

x+y+z=
x=
y=
z=

and solve. Or just use the first formula and solve for each value by inserting the other formulas.

Dyou geddit?

Answer 2

Not really

Answer 3

Okay so you have

x+y+z= 17.666 (feet)

x= 5.72 (feet)
y= z-4
z= y+4

then you put those values into formula one

x+y+z=17.666
5.72+y+z=17.666

then you move the x value over the equals sign

y+z=17.666-5.72


Do you see where I'm going?