Question

Mario needs to cut three book shelves from a board that is 1.8 meters long. The second shelf is15 centimeters longer than twice the length of the first shelf. The remaining shelf is 5 centimeters longer than the first shelf. The equation below represents this situation, where x is the length of the first shelf in meters.
x+ (2x+ 0.15)+(x+ 0.05) =1.8
Which of the following is the length, in meters, of the first shelf?

Answer 1

@beccaboo333

Answer 2

@geerky42

Answer 3

This is key here: "The remaining shelf is 5 centimeters longer than the first shelf."

so that mean \(\large s_3 = s_1 + 0.05 \) meter
s1 is first shelf and s3 is third shelf.