Betty bought pieces of paper to make 3 lanterns. She used ¹₈ of the pieces of paper on the first lantern. She used 25 more pieces of paper on the second lantern than the first lantern. She used the remaining 125 pieces of paper on the last lantern. How many pieces of papers did she buy?
Number of pieces of paper used to make the first lantern = 1 u
Number of pieces of paper used to make the second lantern = 1 u + 25
Number of pieces of paper used to make the third lantern = 125

Total number of pieces of paper used to make the lanterns = 8 u

8 u = 1 u + 1 u + 25 + 125
8 u - 1 u - 1 u = 25 + 125
6 u = 150

1 u = 150 ÷ 6 = 25

Total number of pieces of paper that Betty bought
= 8 u
= 8 x 25
= 200

Answer(s): 200