If LL = 60 and PL = 20, what is PI?

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Multiple Choice

If LL = 60 and PL = 20, what is PI?

Explanation:
On a straight line with a point between the others, the distance from the far points equals the sum of the two segments to the middle point. Here I, P, and L lie on a line with P between I and L, so IL = IP + PL. You’re given IL = 60 and PL = 20, so IP = IL − PL = 60 − 20 = 40. Therefore PI is 40.

On a straight line with a point between the others, the distance from the far points equals the sum of the two segments to the middle point. Here I, P, and L lie on a line with P between I and L, so IL = IP + PL. You’re given IL = 60 and PL = 20, so IP = IL − PL = 60 − 20 = 40. Therefore PI is 40.

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