Question

Rashi made a rectangular frame for her latest oil painting. The length is 15 centimeters more than triple the width. The perimeter of the frame is 70 centimeters. Find the length and the width of the frame.

Answer 1

Step 1

List all parameters

Width = m

Length = 3m + 15

perimeter = 70

Step 2

Perimeter = 2L + 2W

70 = 2(3m + 15) + 2m

70 = 6m + 30 + 2m

70 - 30 = 8m

40 = 8m

m = 40/8

m = 5

Length = 3m + 15 = 3x5 + 15 = 15 + 15 = 30 meters

width = 5 meters