how to find the perimeter

Question

One side of a rectangle is 3 more than the other. If you increase the smaller side by 3, and double the longer side, find the perimeter of the new rectangle.

Answer 1

L = w + 3 (the length is 3 units more than the width)

P = 2L + 2w (perimeter is equal to the 2 lengths and 2 widths added together)

If we increase original-w by 3, then w is going to be the same length as original-L.

If we double the longer side, then we're multiplying by 2. Taking those factors into consideration, we have:

P = 2(2L) + 2L

P = 4L + 2L

P = 6L, where L is the value of the original length side. As we have no numerical values given for P, L or w, that's as far as this can be solved.