Cody and tyler were once the same height. since then, tyler's height has increased by 20%, while cody has grown half as much. if tyler is 4 feet tall now, how many inches tall is cody now?

Cody is 60 inches tall.

Step-by-step explanation:

Let be the initial height of Cody and Tyler, then we know that now Cody's height is 20% more than , or

and Tyler's height has increased half as much as the initial height; or

Now Tyler is 4 feet tall; therefore ,

is the initial height of Cody and Tyler.

Now Cody has grown as half as much as his initial height; therefore:

When converted to inches, this is 60 inches.

Therefore Cody is 60 inches tall.

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point