ExpertsGlobal5
The per sofa selling price at a showroom this year was $40 more than this price last year. What was the revenue of the showroom last year?
(1) The showroom sold 20% more number of sofas this year than it did last year.
(2) The showroom earned $30,000 more revenue this year than it did last year.
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Let the selling price of the Sofa, last year be P.
Let the quantity sold last year be Q.
Revenue last year = P*Q
THIS YEAR:
Selling price = P+40
Quantity sold = Q2
Revenue = (P+40)*Q2
Statement 1:
The showroom sold 20% more number of sofas this year than it did last year.
Q2 = 1.2 Q
Revenue this year = PQ.
Two unknown variables. Hence,
insufficient.
Statement 2:
The showroom earned $30,000 more revenue this year than it did last year.
(p+40)* Q2 - PQ = $30,000.
Hence,
Insufficient Combining both statements 1 and 2, we get
(P+40)*1.2Q - PQ = 30000
1.2PQ + 48Q - PQ = 30000
0.2PQ + 48Q = 30000
Two unknown variables, hence
Insufficient Option E