# Answer to Question #9528 in Analytic Geometry for Candice

Question #9528

Sub 24

Ques. 15

A 20 m ladder and a 15 m ladder were leaned against a building. The bottom of the longer ladder was 7 m farther from the building than the bottom of the shorter ladder, but both ladders are the same distance up the building. Find the distance.

Ques. 15

A 20 m ladder and a 15 m ladder were leaned against a building. The bottom of the longer ladder was 7 m farther from the building than the bottom of the shorter ladder, but both ladders are the same distance up the building. Find the distance.

Expert's answer

x^2+y^2 = 73

4x+4y = 44, x +y = 11, x = 11- y

(11 - y)^2 +y^2 = 73,

y^2 -11y +24 = 0, y1 = 3, y2 = 8

x1 = 8, x2 = 3.

So the sides are 3 ft and

8 ft

4x+4y = 44, x +y = 11, x = 11- y

(11 - y)^2 +y^2 = 73,

y^2 -11y +24 = 0, y1 = 3, y2 = 8

x1 = 8, x2 = 3.

So the sides are 3 ft and

8 ft

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