Question

Building A is 255 meters taller than building B. If the height of building A is subtracted from twice the height of building B, the result is 234 meters. How tall is each

skyscraper?

Answer 1

A = 744 meters B = 489 meters

Explanation:

A = B + 255

2B - A = 234

-2B -2B Subract the -2B from both sides

-A = -2B + 234

A = 2B - 234 Divide by -1 to get A alone

B + 255 = 2B - 234 Set both equations equal to each other

- B -B

255 = B - 234

+234 +234

489 = B

Plug 234 in for B in the original equations

A = 489 + 255

A = 744