Reduce the price by x yuan

Then the daily sales volume is100+(x/2) * 20 =100+10x.

Then the daily profit = [(60-x)-40)] * (100+10x) = 2240.

= = = & gt(20-x)* 10( 10+x)= 2240

= = = & gt(20-x)*( 10+x)=224

= = = & gt200+ 10x-x^2=224

= = = & gtx^2- 10x+24=0

= = = & gt(x-4)(x-6)=0

= = = & gtX=4 or x=6

In other words, if 4 yuan and 6 yuan reduce their prices, they will both make a profit of 2240 yuan.

(2) Make it as convenient as possible for customers, and the price will be lower.

So we should choose to reduce the price in 6 yuan.

The price at this time is 60-6=54 yuan.

54/60=0.9

So it is sold at 10% off the original price.