A Contractor Finds a Bill for $1,210 for 520 Ceiling

A contractor finds a bill for $1,210 for 520 ceiling tiles. She knows that there were two types of tiles used; one selling at $2.00 a tile and the other at $3.00 a tile. How many of each type were used?

A) 170 tiles of the first type were used,
350 tiles of the second were used.
B) 340 tiles of the first type were used,
130 tiles of the second were used.
C) 350 tiles of the first type were used,
170 tiles of the second were used.
D) 350 tiles of the first type were used,
120 tiles of the second were used.
E) 350 tiles of the first type were used,
140 tiles of the second were used.

Correct Answer:

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