The library is 0.45 mile west of the school. The police station is 1.3 miles west of the school. The post office is halfway between the library and the police station. How far west of the school is the post office?

Hi, to answer this question, first we have to subtract the School -library distance (0.45) to the school -police station distance (1.3) to obtain the distance between the library and the police station:

L-P = 1.3-0.45 = 0.85

Since the post office is halfway between the library and the police station, we have to divide that distance by 2:

0.85 /2 = 0.425

Finally we add the Library-school distance:

0.425+0.45 = 0.875 miles

The library is 0.45 mile west of the school. The police station is 1.3 miles west of the school. The post office is halfway between the library and the police station. How far west of the school is the post office?​

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The library is 0.45 mile west of the school. The police station is 1.3 miles west of the school. The post office is halfway between the library and the police station. How far west of the school is the post office?