2what is the value of x given that pq || bc

Since PQ // BC, ABC and APQ are similar triangles, so we can use the Thales theorem
AB / AP = AC / x   it means 9/3 = x + 20/ x   because  AB=6+3=9

3= x+20) /x   implies 3x = x +20, and 2x = 20, finally x= 20/2=10
x= 10

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A: 0.26 would be the answer