Mark H. answered • 04/08/15

Tutoring in Math and Science at all levels

OP = original price

DP = discounted price

From the 1st sentence, we have:

DP = OP - 0.3 (OP) = 0.7 (OP)

From the second sentence:

DP + 0.07 (DP) = 674.10

Simplify:

1.07 (DP) = 674.10

Now, substitute for DP using the 1st equation:

(0.7)(1.07) OP = 674.10

0.749 OP = 674.10

OP = 900