Question

In a square, the sum of the lengths of three sides is 45 and in a rectangle the difference between a length and a width is 5 in. If a width of the rectangle is the same as a side of the square, how long is a length of the rectangle?


15

20

22

24

Answer 1

a + a + a = 45

x - a = 5

find x

Answer 2

x=50

Answer 3

3a = 45
a = 15

but l=a
therefore
l=a=15