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Mr. Perez will be driving to a conference. On the map, the distance he must drive is 11cm.
The scale of the map is 2 cm = 40 km.

a. How far will Mr. Perez be driving to the conference?

b. After the conference, if he decides to drive 90km FARTHER to visit an old friend, how many centimeters will he be FROM HOME on the map?