the price of a maruti car rises by 30% while the sales of the car came down by 20%. what is the percent change in the total revenue?  Select: A) -4 B) 4 C) -2 D) 0 E) none of these
Assume that price is 100 and sales are also 100. Total revenue is 100*100= 
<gadget id="calculator">100*100</gadget>
<output>10_000</output>
10000(100%). Now price increased by 30%. So new price is 130. Similarly new sales are 80. Now revenue is  130*80= 
<gadget id="calculator"> 130*80</gadget>
<output>10_400</output>
10400(104%)= So total change is 4%   ANSWER:4
<result>B</result>
the price of a maruti car rises by 30% while the sales of the car came down by 20%. what is the percent change in the total revenue?